Company lists · Data refreshed September 2026
Top 25 Environmental conservation organizations worldwide
RevenueBase identified 6,800 environmental conservation organizations worldwide as of September 2026 and tracks 103,447 professional contacts across them, including 29,616 with verified work emails. The United States is the largest market and London the largest hub.
This list covers environmental conservation organizations worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026. Country and city lists for environmental conservation organizations follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 environmental conservation organizations worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,526 contacts → | ||||
Indirect evidence “Air, water, food, shelter, income: nature sustains every aspect of our lives.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,763 contacts → | ||||
Indirect evidence “Nature is our life-support system.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,945 contacts → | ||||
Indirect evidence “Greenpeace is comprised of 25 independent national/regional organisations in over 55 countries across Europe, the Americas, Africa, Asia and the Pacific, as well as a…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,969 contacts → | ||||
Indirect evidence “Passionate about nature, dedicated to saving it.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,965 contacts → | ||||
Strong evidence “IUCN, the International Union for Conservation of Nature, helps the world find pragmatic solutions to our most pressing environment and development challenges.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,604 contacts → | ||||
Strong evidence “Official account of Ontario Ministry of the Environment, Conservation and Parks.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,560 contacts → | ||||
Partial evidence “Since 1987, Conservation International has worked to spotlight and secure the critical benefits that nature provides to humanity.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,352 contacts → | ||||
Partial evidence “We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,290 contacts → | ||||
Partial evidence “Our planet faces many big conservation challenges.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 942 contacts → | ||||
Partial evidence “NRDC is the nation's most effective environmental action organization.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 874 contacts → | ||||
Indirect evidence “Mandai Wildlife Group is dedicated to caring for the planet and protecting animals and nature.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 795 contacts → | ||||
Strong evidence “The Student Conservation Association (SCA) is the largest provider of hands-on environmental conservation programs for youth and adults.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 750 contacts → | ||||
Indirect evidence “Groundwork takes practical action to create a fair and green future in which people, places, and nature thrive.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 672 contacts → | ||||
Indirect evidence “Earthjustice is a non-profit public interest law organization dedicated to protecting the magnificent places, natural resources, and wildlife of this earth, and to defending the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 585 contacts → | ||||
Partial evidence “As America's largest non-profit conservation organization, the National Wildlife Federation works closely with those who span the social and political spectrum, but who are…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 576 contacts → | ||||
Indirect evidence “Fauna & Flora's work spans across the globe, with over 100 projects in more than 40 countries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 559 contacts → | ||||
Partial evidence “Canada’s leading land conservation organization.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 556 contacts → | ||||
Indirect evidence “Continually conserve and manage forests and wildlife using state-of-the-art technology to maintain and promote the historical, physiological and cultural value of the natural…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 554 contacts → | ||||
Partial evidence “Mass Audubon is the largest nature-based conservation organization in New England.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 517 contacts → | ||||
Indirect evidence “Fondée en 1993 par des passionnés de nature engagés, Biotope s’est imposée au fil des années comme précurseur et leader mondial de l’ingénierie environnementale et de la…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 461 contacts → | ||||
Partial evidence “We work towards the ecological restoration and conservation of land and water resources, in conserving the uplands and other eco-fragile, degraded and marginalised zones of the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 398 contacts → | ||||
Partial evidence “WWF is one of the world's largest and most respected independent nature conservation organizations with around 5 million supporters and a global network that is active in over 100…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 368 contacts → | ||||
Indirect evidence “Rare is a global leader in driving social change for people and nature.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 352 contacts → | ||||
Indirect evidence “La LPO a pour objet d'agir ou de favoriser les actions en faveur de la nature et de la biodiversité dans les domaines de la connaissance, l’expertise et la recherche; la…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 330 contacts → | ||||
Indirect evidence “We’re BirdLife International, the only global Partnership conserving birds and all life on our planet.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: environmental conservation organizations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names environmental conservation organizations.
- Partial evidence
- Its own public description names part of environmental conservation organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name environmental conservation organizations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 6,800 environmental conservation organizations worldwide
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Environmental conservation organizations worldwide at a glance
As of Sep 19, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among environmental conservation organizations, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for environmental conservation organizations are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “environmental conservation organizations”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names environmental conservation organizations), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among environmental conservation organizations, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 29,616 across the full list. 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 September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Environmental conservation organizations by location
28 lists · largest firstEvery Environmental conservation organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Environmental conservation organizations based in the United States1,132
- Environmental conservation organizations based in India548
- Environmental conservation organizations based in Brazil326
- Environmental conservation organizations based in France317
- Environmental conservation organizations based in Canada226
- Environmental conservation organizations based in the United Kingdom217
- Environmental conservation organizations based in Australia186
- Environmental conservation organizations based in Germany172
- Environmental conservation organizations based in Spain146
- Environmental conservation organizations based in Indonesia121
- Environmental conservation organizations based in Mexico109
- Environmental conservation organizations based in Italy100
- Environmental conservation organizations based in Colombia93
- Environmental conservation organizations based in South Africa79
- Environmental conservation organizations based in Kenya73
- Environmental conservation organizations based in Switzerland69
- Environmental conservation organizations based in the Netherlands68
- Environmental conservation organizations based in Chile64
- Environmental conservation organizations based in Türkiye55
- Environmental conservation organizations based in Argentina54
- Environmental conservation organizations based in Portugal47
- Environmental conservation organizations based in Poland44
- Environmental conservation organizations based in Belgium34
- Environmental conservation organizations based in Hong Kong32
- Environmental conservation organizations based in New Zealand30
- Environmental conservation organizations based in the Philippines26
- Environmental conservation organizations based in Sweden25
Cities
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names environmental conservation organizations, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many environmental conservation organizations are there worldwide?
RevenueBase identified 6,800 environmental conservation organizations worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
The Nature Conservancy, headquartered in Arlington, tops this list with the largest team on record.
Which country has the most environmental conservation organizations?
The United States leads with 1,132 companies, followed by India (548) and Brazil (326). Every environmental conservation organizations list by country and city is linked on this page.
Which city has the most environmental conservation organizations?
London leads with 66 headquartered companies, followed by New Delhi (57) and Washington (50).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 29,616 verified decision-maker contacts tracked across these 6,800 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
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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 Smart Search, 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.