Company lists · Data refreshed November 2026
Top 25 Climate advocacy nonprofits worldwide
RevenueBase identified 2,425 company matches for climate advocacy nonprofits worldwide as of November 2026 and tracks 31,853 professional contacts across them, including 10,555 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for climate advocacy nonprofits worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for climate advocacy nonprofits follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest climate advocacy nonprofits worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,446 contacts → | ||||
Exact match “We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 1,156 contacts → | ||||
Exact match “At the Sierra Club, we believe in the power of togetherness.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 1,155 contacts → | ||||
Exact match “The Powur Mission: Accelerate the adoption of clean energy worldwide We're empowering our community of homeowners and advisors to thrive in the global shift to sustainable energy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 1,011 contacts → | ||||
Exact match “NRDC is the nation's most effective environmental action organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 753 contacts → | ||||
Exact match “Wij strijden voor gelijkheid en we staan achter de mensen die opstaan voor gelijkheid.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 396 contacts → | ||||
Exact match “Rare is a global leader in driving social change for people and nature.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 325 contacts → | ||||
Exact match “The European Climate Foundation (ECF) is a leading philanthropic initiative dedicated to fostering the net-zero transition and ensuring a healthy, thriving planet for current and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 315 contacts → | ||||
Exact match “Climate KIC is Europe's foremost climate innovation agency: an international non-profit Foundation that for over 16 years has been embedded in the places where climate ambition…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 283 contacts → | ||||
Exact match “Earth5R is a UNESCO-recognized global environmental organization driving the shift towards a green economy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 241 contacts → | ||||
Exact match “Ceres is a nonprofit advocacy organization working to accelerate the transition to a cleaner, more just, and resilient world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 238 contacts → | ||||
Exact match “We are in the business of conservation, creating innovative solutions that drive nature-based action for climate protection, sustainable economies and vibrant communities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 224 contacts → | ||||
Exact match “LCV believes our earth is worth fighting for because everyone has a right to clean air, water, and a safe, healthy community.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 201 contacts → | ||||
Exact match “Sunrise is a movement of young people uniting to stop the climate crisis.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 192 contacts → | ||||
Exact match “Onze missie?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 187 contacts → | ||||
Exact match “Since 1966, CLF has taken on powerful opponents who would pollute our air and water and squander our resources.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 187 contacts → | ||||
Exact match “The Villars Institute is a nonprofit foundation based in the Swiss Alps dedicated to accelerating the transition to net zero emissions and a healthier planet through…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 184 contacts → | ||||
Exact match “E3G is an independent think tank working to deliver a safe climate for all.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 178 contacts → | ||||
Exact match “Our Purpose: Food & Water Watch mobilizes regular people to build political power to move bold & uncompromised solutions to the most pressing food, water, and climate problems of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 174 contacts → | ||||
Exact match “We are an international, collaborative network of communications professionals in the fields of climate, energy and nature.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 168 contacts → | ||||
Exact match “Greenpeace is an independent global campaigning network that acts to change attitudes and behaviour, to protect and conserve the environment and to promote peace.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 160 contacts → | ||||
Exact match “Solutions for Our Climate (SFOC) is an international climate advocacy organization founded in 2016 dedicated to accelerating effective climate action and energy transition across…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 159 contacts → | ||||
Exact match “Clean Foundation helps the communities in which we work make real progress toward a cleaner future by taking on climate change challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 158 contacts → | ||||
Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 157 contacts → | ||||
Exact match “ALL ONE SKY FOUNDATION is a not-for-profit, charitable organization established to help vulnerable populations at the crossroads of energy and climate change.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 152 contacts → | ||||
Exact match “Ecology Action is an award-winning California 501(c)(3) non-profit that’s been inspiring sustainable community actions since 1970.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “climate advocacy nonprofits”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 2,425 climate advocacy nonprofits worldwide
See the full list, filter by size, metro and specialty, and access 10,555 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Climate advocacy nonprofits worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for climate advocacy nonprofits are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “climate advocacy nonprofits” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 10,555 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Climate advocacy nonprofits by location
15 lists · largest firstEvery Climate advocacy nonprofits list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Climate advocacy nonprofits based in the United States634
- Climate advocacy nonprofits based in the United Kingdom141
- Climate advocacy nonprofits based in India122
- Climate advocacy nonprofits based in Canada82
- Climate advocacy nonprofits based in France82
- Climate advocacy nonprofits based in Germany64
- Climate advocacy nonprofits based in Australia63
- Climate advocacy nonprofits based in the Netherlands32
- Climate advocacy nonprofits based in Switzerland28
- Climate advocacy nonprofits based in Belgium27
Cities
- Climate advocacy nonprofits based in London, United Kingdom73
- Climate advocacy nonprofits based in Washington, United States68
- Climate advocacy nonprofits based in New York, United States55
- Climate advocacy nonprofits based in Paris, France31
- Climate advocacy nonprofits based in San Francisco, United States27
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “climate advocacy nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many climate advocacy nonprofits are there worldwide?
RevenueBase identified 2,425 company matches for climate advocacy nonprofits worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Environmental Defense Fund tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most climate advocacy nonprofits?
The United States leads with 634 companies, followed by the United Kingdom (141) and India (122). Every climate advocacy nonprofits list by country and city is linked on this page.
Which city has the most climate advocacy nonprofits?
London leads with 74 company records, followed by Washington (68) and New York (55).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 10,555 professional contacts with verified work emails tracked across these 2,425 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,425 climate advocacy nonprofits worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 climate advocacy nonprofits worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,425 matching company records for climate advocacy nonprofits worldwide, with 31,853 tracked contacts and 10,555 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 climate advocacy nonprofits worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Environmental Defense Fundedf.orgHQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 1,446 contacts → |
“We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Sierra Clubsierraclub.orgHQ: Oakland, CA, United StatesReported employees: 501-1,000 | Oakland, CA, United States | 501-1,000 | Exact match | 1,156 contacts → |
“At the Sierra Club, we believe in the power of togetherness.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Powur, PBCpowur.comHQ: San Diego, United StatesReported employees: Not recorded | San Diego, United States | Not recorded | Exact match | 1,155 contacts → |
“The Powur Mission: Accelerate the adoption of clean energy worldwide We're empowering our community of homeowners and advisors to thrive in the global shift to sustainable energy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 1,011 contacts → |
“NRDC is the nation's most effective environmental action organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Oxfam Noviboxfamnovib.nlHQ: The Hague, NetherlandsReported employees: 201-500 | The Hague, Netherlands | 201-500 | Exact match | 753 contacts → |
“Wij strijden voor gelijkheid en we staan achter de mensen die opstaan voor gelijkheid.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  RARErare.orgHQ: Arlington, VA, United StatesReported employees: 51-200 | Arlington, VA, United States | 51-200 | Exact match | 396 contacts → |
“Rare is a global leader in driving social change for people and nature.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  European Climate Foundationeuropeanclimate.orgHQ: The Hague, NetherlandsReported employees: 201-500 | The Hague, Netherlands | 201-500 | Exact match | 325 contacts → |
“The European Climate Foundation (ECF) is a leading philanthropic initiative dedicated to fostering the net-zero transition and ensuring a healthy, thriving planet for current and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Climate KICclimate-kic.orgHQ: Amsterdam, NetherlandsReported employees: 51-200 | Amsterdam, Netherlands | 51-200 | Exact match | 315 contacts → |
“Climate KIC is Europe's foremost climate innovation agency: an international non-profit Foundation that for over 16 years has been embedded in the places where climate ambition…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Earth5rearth5r.orgHQ: Mumbai, IndiaReported employees: Not recorded | Mumbai, India | Not recorded | Exact match | 283 contacts → |
“Earth5R is a UNESCO-recognized global environmental organization driving the shift towards a green economy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Ceres, INCceres.orgHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 241 contacts → |
“Ceres is a nonprofit advocacy organization working to accelerate the transition to a cleaner, more just, and resilient world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  The Conservation Fundconservationfund.orgHQ: Arlington, VA, United StatesReported employees: 201-500 | Arlington, VA, United States | 201-500 | Exact match | 238 contacts → |
“We are in the business of conservation, creating innovative solutions that drive nature-based action for climate protection, sustainable economies and vibrant communities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 224 contacts → |
“LCV believes our earth is worth fighting for because everyone has a right to clean air, water, and a safe, healthy community.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Sunrise Movementsunrisemovement.orgHQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 201 contacts → |
“Sunrise is a movement of young people uniting to stop the climate crisis.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Milieudefensiemilieudefensie.nlHQ: Amsterdam, NetherlandsReported employees: 51-200 | Amsterdam, Netherlands | 51-200 | Exact match | 192 contacts → |
“Onze missie?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Conservation LAW Foundationclf.orgHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 187 contacts → |
“Since 1966, CLF has taken on powerful opponents who would pollute our air and water and squander our resources.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  The Villars Institutevillars.orgHQ: Villars, SwitzerlandReported employees: Not recorded | Villars, Switzerland | Not recorded | Exact match | 187 contacts → |
“The Villars Institute is a nonprofit foundation based in the Swiss Alps dedicated to accelerating the transition to net zero emissions and a healthier planet through…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  E3ge3g.orgHQ: Waterloo, United KingdomReported employees: 51-200 | Waterloo, United Kingdom | 51-200 | Exact match | 184 contacts → |
“E3G is an independent think tank working to deliver a safe climate for all.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Food & Water Watchfoodandwaterwatch.orgHQ: Washington, OR, United StatesReported employees: 51-200 | Washington, OR, United States | 51-200 | Exact match | 178 contacts → |
“Our Purpose: Food & Water Watch mobilizes regular people to build political power to move bold & uncompromised solutions to the most pressing food, water, and climate problems of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Global Strategic Communications Council Gsccgsccnetwork.orgHQ: United StatesReported employees: 201-500 | United States | 201-500 | Exact match | 174 contacts → |
“We are an international, collaborative network of communications professionals in the fields of climate, energy and nature.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Greenpeace UKgreenpeace.org.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 168 contacts → |
“Greenpeace is an independent global campaigning network that acts to change attitudes and behaviour, to protect and conserve the environment and to promote peace.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Solutions For OUR Climate Sfocforourclimate.orgHQ: Seoul, South KoreaReported employees: 51-200 | Seoul, South Korea | 51-200 | Exact match | 160 contacts → |
“Solutions for Our Climate (SFOC) is an international climate advocacy organization founded in 2016 dedicated to accelerating effective climate action and energy transition across…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Clean Foundationcleanfoundation.caHQ: Dartmouth, NS, CanadaReported employees: 51-200 | Dartmouth, NS, Canada | 51-200 | Exact match | 159 contacts → |
“Clean Foundation helps the communities in which we work make real progress toward a cleaner future by taking on climate change challenges.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  U.S. Energy Foundationef.orgHQ: San Francisco, DC, United StatesReported employees: 51-200 | San Francisco, DC, United States | 51-200 | Exact match | 158 contacts → |
“U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  ALL ONE SKY Foundationallonesky.caHQ: Calgary, AB, CanadaReported employees: Not recorded | Calgary, AB, Canada | Not recorded | Exact match | 157 contacts → |
“ALL ONE SKY FOUNDATION is a not-for-profit, charitable organization established to help vulnerable populations at the crossroads of energy and climate change.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Ecology Actionecoact.orgHQ: Santa Cruz, CA, United StatesReported employees: 51-200 | Santa Cruz, CA, United States | 51-200 | Exact match | 152 contacts → |
“Ecology Action is an award-winning California 501(c)(3) non-profit that’s been inspiring sustainable community actions since 1970.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,425 company matches
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Climate advocacy nonprofits: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,419 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 2,425 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Climate advocacy nonprofits by location
15 lists · largest firstEvery Climate advocacy nonprofits list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Climate advocacy nonprofits based in the United States634
- Climate advocacy nonprofits based in the United Kingdom141
- Climate advocacy nonprofits based in India122
- Climate advocacy nonprofits based in Canada82
- Climate advocacy nonprofits based in France82
- Climate advocacy nonprofits based in Germany64
- Climate advocacy nonprofits based in Australia63
- Climate advocacy nonprofits based in the Netherlands32
- Climate advocacy nonprofits based in Switzerland28
- Climate advocacy nonprofits based in Belgium27
Cities
- Climate advocacy nonprofits based in London, United Kingdom73
- Climate advocacy nonprofits based in Washington, United States68
- Climate advocacy nonprofits based in New York, United States55
- Climate advocacy nonprofits based in Paris, France31
- Climate advocacy nonprofits based in San Francisco, United States27
Questions about this company list
What does Exact match mean for climate advocacy nonprofits?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many climate advocacy nonprofits did RevenueBase find worldwide?
The saved snapshot records 2,425 matching company records, 31,853 tracked contacts and 10,555 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 climate advocacy nonprofits worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/climate-advocacy-nonprofits.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 climate advocacy nonprofits worldwide
RevenueBase records 2,425 matching company records for climate advocacy nonprofits worldwide, with 31,853 tracked contacts and 10,555 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 climate advocacy nonprofits worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Environmental Defense Fundedf.org HQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 1,446 contacts → |
“We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Sierra Clubsierraclub.org HQ: Oakland, CA, United StatesReported employees: 501-1,000 | Oakland, CA, United States | 501-1,000 | Exact match | 1,156 contacts → |
“At the Sierra Club, we believe in the power of togetherness.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Powur, PBCpowur.com HQ: San Diego, United StatesReported employees: Not recorded | San Diego, United States | Not recorded | Exact match | 1,155 contacts → |
“The Powur Mission: Accelerate the adoption of clean energy worldwide We're empowering our community of homeowners and advisors to thrive in the global shift to sustainable energy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 1,011 contacts → |
“NRDC is the nation's most effective environmental action organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Oxfam Noviboxfamnovib.nl HQ: The Hague, NetherlandsReported employees: 201-500 | The Hague, Netherlands | 201-500 | Exact match | 753 contacts → |
“Wij strijden voor gelijkheid en we staan achter de mensen die opstaan voor gelijkheid.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | RARErare.org HQ: Arlington, VA, United StatesReported employees: 51-200 | Arlington, VA, United States | 51-200 | Exact match | 396 contacts → |
“Rare is a global leader in driving social change for people and nature.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | European Climate Foundationeuropeanclimate.org HQ: The Hague, NetherlandsReported employees: 201-500 | The Hague, Netherlands | 201-500 | Exact match | 325 contacts → |
“The European Climate Foundation (ECF) is a leading philanthropic initiative dedicated to fostering the net-zero transition and ensuring a healthy, thriving planet for current and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Climate KICclimate-kic.org HQ: Amsterdam, NetherlandsReported employees: 51-200 | Amsterdam, Netherlands | 51-200 | Exact match | 315 contacts → |
“Climate KIC is Europe's foremost climate innovation agency: an international non-profit Foundation that for over 16 years has been embedded in the places where climate ambition…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Earth5rearth5r.org HQ: Mumbai, IndiaReported employees: Not recorded | Mumbai, India | Not recorded | Exact match | 283 contacts → |
“Earth5R is a UNESCO-recognized global environmental organization driving the shift towards a green economy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Ceres, INCceres.org HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 241 contacts → |
“Ceres is a nonprofit advocacy organization working to accelerate the transition to a cleaner, more just, and resilient world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | The Conservation Fundconservationfund.org HQ: Arlington, VA, United StatesReported employees: 201-500 | Arlington, VA, United States | 201-500 | Exact match | 238 contacts → |
“We are in the business of conservation, creating innovative solutions that drive nature-based action for climate protection, sustainable economies and vibrant communities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 224 contacts → |
“LCV believes our earth is worth fighting for because everyone has a right to clean air, water, and a safe, healthy community.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Sunrise Movementsunrisemovement.org HQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 201 contacts → |
“Sunrise is a movement of young people uniting to stop the climate crisis.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Milieudefensiemilieudefensie.nl HQ: Amsterdam, NetherlandsReported employees: 51-200 | Amsterdam, Netherlands | 51-200 | Exact match | 192 contacts → |
“Onze missie?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Conservation LAW Foundationclf.org HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 187 contacts → |
“Since 1966, CLF has taken on powerful opponents who would pollute our air and water and squander our resources.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | The Villars Institutevillars.org HQ: Villars, SwitzerlandReported employees: Not recorded | Villars, Switzerland | Not recorded | Exact match | 187 contacts → |
“The Villars Institute is a nonprofit foundation based in the Swiss Alps dedicated to accelerating the transition to net zero emissions and a healthier planet through…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | E3ge3g.org HQ: Waterloo, United KingdomReported employees: 51-200 | Waterloo, United Kingdom | 51-200 | Exact match | 184 contacts → |
“E3G is an independent think tank working to deliver a safe climate for all.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Food & Water Watchfoodandwaterwatch.org HQ: Washington, OR, United StatesReported employees: 51-200 | Washington, OR, United States | 51-200 | Exact match | 178 contacts → |
“Our Purpose: Food & Water Watch mobilizes regular people to build political power to move bold & uncompromised solutions to the most pressing food, water, and climate problems of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Global Strategic Communications Council Gsccgsccnetwork.org HQ: United StatesReported employees: 201-500 | United States | 201-500 | Exact match | 174 contacts → |
“We are an international, collaborative network of communications professionals in the fields of climate, energy and nature.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Greenpeace UKgreenpeace.org.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 168 contacts → |
“Greenpeace is an independent global campaigning network that acts to change attitudes and behaviour, to protect and conserve the environment and to promote peace.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Solutions For OUR Climate Sfocforourclimate.org HQ: Seoul, South KoreaReported employees: 51-200 | Seoul, South Korea | 51-200 | Exact match | 160 contacts → |
“Solutions for Our Climate (SFOC) is an international climate advocacy organization founded in 2016 dedicated to accelerating effective climate action and energy transition across…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Clean Foundationcleanfoundation.ca HQ: Dartmouth, NS, CanadaReported employees: 51-200 | Dartmouth, NS, Canada | 51-200 | Exact match | 159 contacts → |
“Clean Foundation helps the communities in which we work make real progress toward a cleaner future by taking on climate change challenges.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | U.S. Energy Foundationef.org HQ: San Francisco, DC, United StatesReported employees: 51-200 | San Francisco, DC, United States | 51-200 | Exact match | 158 contacts → |
“U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | ALL ONE SKY Foundationallonesky.ca HQ: Calgary, AB, CanadaReported employees: Not recorded | Calgary, AB, Canada | Not recorded | Exact match | 157 contacts → |
“ALL ONE SKY FOUNDATION is a not-for-profit, charitable organization established to help vulnerable populations at the crossroads of energy and climate change.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Ecology Actionecoact.org HQ: Santa Cruz, CA, United StatesReported employees: 51-200 | Santa Cruz, CA, United States | 51-200 | Exact match | 152 contacts → |
“Ecology Action is an award-winning California 501(c)(3) non-profit that’s been inspiring sustainable community actions since 1970.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,425 company matches
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Climate advocacy nonprofits: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,419 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 2,425 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Climate advocacy nonprofits by location
15 lists · largest firstEvery Climate advocacy nonprofits list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Climate advocacy nonprofits based in the United States634
- Climate advocacy nonprofits based in the United Kingdom141
- Climate advocacy nonprofits based in India122
- Climate advocacy nonprofits based in Canada82
- Climate advocacy nonprofits based in France82
- Climate advocacy nonprofits based in Germany64
- Climate advocacy nonprofits based in Australia63
- Climate advocacy nonprofits based in the Netherlands32
- Climate advocacy nonprofits based in Switzerland28
- Climate advocacy nonprofits based in Belgium27
Cities
- Climate advocacy nonprofits based in London, United Kingdom73
- Climate advocacy nonprofits based in Washington, United States68
- Climate advocacy nonprofits based in New York, United States55
- Climate advocacy nonprofits based in Paris, France31
- Climate advocacy nonprofits based in San Francisco, United States27
Questions about this company list
What does Exact match mean for climate advocacy nonprofits?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many climate advocacy nonprofits did RevenueBase find worldwide?
The saved snapshot records 2,425 matching company records, 31,853 tracked contacts and 10,555 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
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Related lists
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Cite this list
RevenueBase Data Team. Top 25 climate advocacy nonprofits worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/climate-advocacy-nonprofits.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗