Company lists · Data refreshed September 2026

Top 25 Land conservation groups organizations worldwide

RevenueBase identified 757 land conservation groups organizations worldwide as of September 2026 and tracks 19,142 professional contacts across them, including 7,646 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers land conservation groups 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 15, 2026. Country and city lists for land conservation groups 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 15, 2026 86% judged on-target in blind review
757Companies
19,142Contacts tracked
7,646Verified emails
0Mobile numbers
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The 25 largest land conservation groups organizations worldwide

Ranked by team size
Top 25 of 757 land conservation groups organizations worldwide, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to land conservation groups organizations: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceArlington, VA, United StatesHQ checked Sep 15, 20265,001-10,0006,526 contacts →

Indirect evidence

“Air, water, food, shelter, income: nature sustains every aspect of our lives.”

Source: RevenueBase Database · checked Sep 15, 2026
2Indirect evidenceSandy, United StatesHQ checked Sep 15, 20261,001-5,0001,969 contacts →

Indirect evidence

“Passionate about nature, dedicated to saving it.”

Source: RevenueBase Database · checked Sep 15, 2026
3Partial evidenceReston, VA, United StatesHQ checked Sep 15, 2026201-500585 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 15, 2026
4Strong evidenceToronto, ON, CanadaHQ checked Sep 15, 2026201-500559 contacts →

Strong evidence

“Canada’s leading land conservation organization.”

Source: RevenueBase Database · checked Sep 15, 2026
5Partial evidenceLincoln, MA, United StatesHQ checked Sep 15, 2026201-500554 contacts →

Partial evidence

“Mass Audubon is the largest nature-based conservation organization in New England.”

Source: RevenueBase Database · checked Sep 15, 2026
6Partial evidenceWashington, DC, United StatesHQ checked Sep 15, 202651-200255 contacts →

Partial evidence

“American Farmland Trust (AFT) began in 1980 after a small group of farmers and conservationists asked an important question: What will happen to the nation's food supply if we…”

Source: RevenueBase Database · checked Sep 15, 2026
7Partial evidenceDurango, CO, United StatesHQ checked Sep 15, 202651-200213 contacts →

Partial evidence

“Conservation Legacy is a national organization dedicated to supporting locally based conservation service programs.”

Source: RevenueBase Database · checked Sep 15, 2026
8Strong evidenceWashington, DC, United StatesHQ checked Sep 15, 202651-200199 contacts →

Strong evidence

“The Wilderness Society (TWS) is the leading conservation organization working to protect America’s wild places and public lands for the health of local communities, wildlife, and…”

Source: RevenueBase Database · checked Sep 15, 2026
9Partial evidenceBallarat, AustraliaHQ checked Sep 15, 202651-200161 contacts →

Partial evidence

“CVA is Australia’s leading conservation organisation, empowering people to take action for nature since 1982.”

Source: RevenueBase Database · checked Sep 15, 2026
10Partial evidenceToronto, ON, CanadaHQ checked Sep 15, 202651-200142 contacts →

Partial evidence

“Founded in 1967, World Wildlife Fund Canada is the country’s largest international conservation organization, with the active support of hundreds of thousands of Canadians.”

Source: RevenueBase Database · checked Sep 15, 2026
11Partial evidenceWashington, DC, United StatesHQ checked Sep 15, 202651-200136 contacts →

Partial evidence

“Founded in 1875, American Forests is the oldest national nonprofit conservation organization in the U.S.”

Source: RevenueBase Database · checked Sep 15, 2026
12Partial evidenceMurrieta, CA, United StatesHQ checked Sep 15, 202611-50131 contacts →

Partial evidence

“Eden: People+Planet is a global 501(c)(3) nonprofit organization focused on landscape restoration and conservation through community partnerships.”

Source: RevenueBase Database · checked Sep 15, 2026
13Indirect evidenceLondon, United KingdomHQ checked Sep 15, 202651-200124 contacts →

Indirect evidence

“London Wildlife Trust champions nature’s recovery in London.”

Source: RevenueBase Database · checked Sep 15, 2026
14Indirect evidenceMontpellier, FranceHQ checked Sep 15, 202651-200120 contacts →

Indirect evidence

“Connaître - Protéger - Gérer - Valoriser - Accompagner.”

Source: RevenueBase Database · checked Sep 15, 2026
15Partial evidenceWashington, DC, United StatesHQ checked Sep 15, 202651-200118 contacts →

Partial evidence

“The American Forest Foundation (AFF) is a national conservation organization that works to deliver clean water, wildlife habitat, carbon sequestration and storage, and sustainable…”

Source: RevenueBase Database · checked Sep 15, 2026
16Partial evidenceWashington, DC, United StatesHQ checked Sep 15, 202651-200108 contacts →

Partial evidence

“The Land Trust Alliance is the voice of the land trust community.”

Source: RevenueBase Database · checked Sep 15, 2026
17Partial evidenceDurango, CO, United StatesHQ checked Sep 15, 202611-50108 contacts →

Partial evidence

“Empowering individuals to positively impact their lives, their communities and the environment, Southwest Conservation Corps (SCC) operates conservation service programs across…”

Source: RevenueBase Database · checked Sep 15, 2026
18Indirect evidenceMilwaukee, WI, United StatesHQ checked Sep 15, 202651-20093 contacts →

Indirect evidence

“Our vision is to inspire generations to build environmental curiosity, understanding, and respect.”

Source: RevenueBase Database · checked Sep 15, 2026
19Indirect evidenceKansas City, MO, United StatesHQ checked Sep 15, 202611-5083 contacts →

Indirect evidence

“Bridging The Gap brings people together to protect and restore the web of life on Earth and foster inclusive, thriving communities through environmental education, innovation, and…”

Source: RevenueBase Database · checked Sep 15, 2026
20Partial evidenceMedia, PA, United StatesHQ checked Sep 15, 202651-20080 contacts →

Partial evidence

“Natural Lands is dedicated to preserving and nurturing nature’s wonders while creating opportunities for joy and discovery in the outdoors for everyone.”

Source: RevenueBase Database · checked Sep 15, 2026
21Indirect evidenceNew Haven, CT, United StatesHQ checked Sep 15, 202611-5074 contacts →

Indirect evidence

“Save the Sound leads environmental action across Connecticut, Westchester, NYC, and Long Island.”

Source: RevenueBase Database · checked Sep 15, 2026
22Partial evidenceSeattle, WA, United StatesHQ checked Sep 15, 202611-5068 contacts →

Partial evidence

“OUR MISSION Forterra innovates and scales land-based solutions to address the climate crisis and support equitable, green, and prosperous communities.”

Source: RevenueBase Database · checked Sep 15, 2026
23Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 15, 202611-5067 contacts →

Indirect evidence

“For 25 years, the Santa Valley Open Space Authority – in partnership with community members, nonprofits, and other agencies – has contributed to the quality of life in our…”

Source: RevenueBase Database · checked Sep 15, 2026
24Partial evidenceAnn Arbor, MI, United StatesHQ checked Sep 15, 202611-5064 contacts →

Partial evidence

“The Michigan League of Conservation Voters is a statewide political organization whose mission is to elect pro-conservation candidates to office and to hold all decision makers…”

Source: RevenueBase Database · checked Sep 15, 2026
25Partial evidenceHockessin, DE, United StatesHQ checked Sep 15, 202651-20064 contacts →

Partial evidence

“Founded in 1964, Delaware Nature Society works to improve the environment through conservation, advocacy, and education.”

Source: RevenueBase Database · checked Sep 15, 2026

Showing 25 of 757 land conservation groups organizations worldwide

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Land conservation groups organizations worldwide at a glance

As of Sep 15, 2026
39.9%Verified-email coverage
25.3Average contacts per company
1-10Median size (employees)
1.5%Largest-city concentration · London
Sep 15, 2026Page data refreshed

Companies by employee count

1-10
493
11-50
210
51-200
36
201-500
7
501-1,000
1
1,001-5,000
1
5,001-10,000
1

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 land conservation groups 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
6 countries, largest first: the United States, India, Canada, the United Kingdom, France, Australia. Country and city lists for land conservation groups organizations are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “land conservation groups 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 land conservation groups 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 land conservation groups 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, 7,646 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 15, 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.

Land conservation groups organizations by location

6 lists · largest first

Every Land conservation groups organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 land conservation groups 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 land conservation groups organizations are there worldwide?

RevenueBase identified 757 land conservation groups 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 land conservation groups organizations?

The United States leads with 537 companies, followed by India (68) and Canada (62). Every land conservation groups organizations list by country and city is linked on this page.

Which city has the most land conservation groups organizations?

London leads with 11 headquartered companies, followed by Washington (10) and Toronto (8).

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 7,646 verified decision-maker contacts tracked across these 757 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 15, 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.