Company lists · Data refreshed September 2026

Top 25 Conservation education nonprofits worldwide

RevenueBase identified 3,580 conservation education nonprofits worldwide as of September 2026 and tracks 45,455 professional contacts across them, including 11,780 with verified work emails. The United States is the largest market and London the largest hub.

This list covers conservation education nonprofits 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 conservation education nonprofits 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 19, 2026 86% judged on-target in blind review
3,580Companies
45,455Contacts tracked
11,780Verified emails
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The 25 largest conservation education nonprofits worldwide

Ranked by team size
Top 25 of 3,580 conservation education nonprofits worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to conservation education nonprofits: 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 19, 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 19, 2026
2Indirect evidenceSingaporeHQ checked Sep 19, 20261,001-5,000874 contacts →

Indirect evidence

“Mandai Wildlife Group is dedicated to caring for the planet and protecting animals and nature.”

Source: RevenueBase Database · checked Sep 19, 2026
3Partial evidenceArlington, VA, United StatesHQ checked Sep 19, 2026201-500795 contacts →

Partial 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, 2026
4Indirect evidenceHong Kong Island South, Hong KongHQ checked Sep 19, 20261,001-5,000628 contacts →

Indirect evidence

“Vision Statement: A world where we take action to conserve our environment and grow positively with nature.”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceMachynlleth, United KingdomHQ checked Sep 19, 2026n/a618 contacts →

Indirect evidence

“Mae Canolfan y Dechnoleg Amgen yn elusen addysg amgylcheddol sydd wedi bod yn rhannu atebion i faterion amgylcheddol ac ymchwilio iddyn nhw ers dros 50 mlynedd – gan weithio tuag…”

Source: RevenueBase Database · checked Sep 19, 2026
6Partial evidenceReston, VA, United StatesHQ checked Sep 19, 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 19, 2026
7Partial evidenceLincoln, MA, United StatesHQ checked Sep 19, 2026201-500554 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
8Strong evidenceFlagstaff, AZ, United StatesHQ checked Sep 19, 202651-200521 contacts →

Strong evidence

“American Conservation Experience (ACE) is a national nonprofit conservation corps that recruits, trains, and mobilizes over young adults and emerging professionals annually to…”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceBoston, MA, United StatesHQ checked Sep 19, 2026201-500378 contacts →

Indirect evidence

“The mission of the Appalachian Mountain Club is to foster the protection, enjoyment, and understanding of the outdoors.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceArlington, VA, United StatesHQ checked Sep 19, 202651-200368 contacts →

Indirect evidence

“Rare is a global leader in driving social change for people and nature.”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceRochefort, FranceHQ checked Sep 19, 2026201-500352 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, 2026
12Indirect evidenceCalgary, AB, CanadaHQ checked Sep 19, 2026201-500304 contacts →

Indirect evidence

“Founded in 1929, the Wilder Institute/Calgary Zoo is Canada’s most visited zoo and a cherished family destination for locals and visitors alike.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceUbatuba, BrazilHQ checked Sep 19, 2026501-1,000257 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
14Partial evidenceStockholm, SwedenHQ checked Sep 19, 202651-200246 contacts →

Partial evidence

“The Swedish Society for Nature Conservation (SSNC) is an environmental organization with power to bring about change.”

Source: RevenueBase Database · checked Sep 19, 2026
15Strong evidenceGloucester, MA, United StatesHQ checked Sep 19, 202651-200240 contacts →

Strong evidence

“Seaside Sustainability is a nationally recognized, award-winning 501(c)3 charitable organization dedicated to community engagement, education and environmental conservation.”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceJakarta Selatan, IndonesiaHQ checked Sep 19, 202651-200230 contacts →

Indirect evidence

“Yayasan Konservasi Alam Nusantara (YKAN) adalah organisasi nirlaba berbasis ilmiah yang hadir di Indonesia sejak 2014.”

Source: RevenueBase Database · checked Sep 19, 2026
17Partial evidenceArlington, VA, United StatesHQ checked Sep 19, 2026201-500224 contacts →

Partial evidence

“We are in the business of conservation, creating innovative solutions that drive nature-based action for climate protection, sustainable economies and vibrant communities.”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceCali, ColombiaHQ checked Sep 19, 202651-200217 contacts →

Indirect evidence

“WWF's Mission Statement To stop the degradation of the planet's natural environment and to build a future in which humans live in harmony with nature, by- conserving the world's…”

Source: RevenueBase Database · checked Sep 19, 2026
19Partial evidenceDurango, CO, United StatesHQ checked Sep 19, 202651-200213 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
20Partial evidenceSt. Paul, MN, United StatesHQ checked Sep 19, 2026201-500207 contacts →

Partial evidence

“At Conservation Corps Minnesota & Iowa, youth and young adults grow as environmental stewards and leaders while giving back to the community through meaningful service.”

Source: RevenueBase Database · checked Sep 19, 2026
21Strong evidenceBozeman, MT, United StatesHQ checked Sep 19, 2026n/a193 contacts →

Strong evidence

“Montana Conservation Corps is a nonprofit organization whose mission is to inspire young people, through hands-on conservation service to be leaders, stewards of the land, and…”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceSausalito, CA, United StatesHQ checked Sep 19, 2026201-500188 contacts →

Indirect evidence

“Environmental science in nature’s classroom NatureBridge provides hands-on environmental science programs for young people.”

Source: RevenueBase Database · checked Sep 19, 2026
23Indirect evidenceSolna, SwedenHQ checked Sep 19, 202651-200188 contacts →

Indirect evidence

“Världsnaturfonden WWF kämpar för att skydda de mest hotade och unika arterna och livsmiljöerna på planeten.”

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceMumbai, IndiaHQ checked Sep 19, 202651-200169 contacts →

Indirect evidence

“Bombay Natural History Society (BNHS) is an environmental NGO based out of Shahid Bhagat Singh Road, Mumbai, Maharashtra, India.”

Source: RevenueBase Database · checked Sep 19, 2026
25Strong evidenceGrand Rapids, MI, United StatesHQ checked Sep 19, 202651-200158 contacts →

Strong evidence

“John Ball Zoo is a 501(c)(3) nonprofit corporation committed to the advancement of public education on the need for wildlife conservation and preservation.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 3,580 conservation education nonprofits worldwide

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Conservation education nonprofits worldwide at a glance

As of Sep 19, 2026
25.9%Verified-email coverage
12.7Average contacts per company
1-10Median size (employees)
0.9%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
2,334
11-50
927
51-200
218
201-500
49
501-1,000
16
1,001-5,000
8
5,001-10,000
2
10001+
5

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 conservation education nonprofits, 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 conservation education nonprofits are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “conservation education nonprofits”. 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 conservation education nonprofits), 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 conservation education nonprofits, 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, 11,780 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.

Conservation education nonprofits by location

12 lists · largest first

Every Conservation education nonprofits 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 conservation education nonprofits, 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 conservation education nonprofits are there worldwide?

RevenueBase identified 3,580 conservation education nonprofits 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 conservation education nonprofits?

The United States leads with 1,115 companies, followed by India (228) and France (140). Every conservation education nonprofits list by country and city is linked on this page.

Which city has the most conservation education nonprofits?

London leads with 33 headquartered companies, followed by New York (24) and New Delhi (22).

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 11,780 verified decision-maker contacts tracked across these 3,580 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.