Company lists · Data refreshed September 2026

Top 25 Wildlife conservation nonprofits worldwide

RevenueBase identified 3,954 wildlife conservation nonprofits worldwide as of September 2026 and tracks 84,484 professional contacts across them, including 24,240 with verified work emails. The United States is the largest market and London the largest hub.

This list covers wildlife conservation 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 22, 2026. Country and city lists for wildlife conservation 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 22, 2026 86% judged on-target in blind review
3,954Companies
84,484Contacts tracked
24,240Verified emails
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The 25 largest wildlife conservation nonprofits worldwide

Ranked by team size
Top 25 of 3,954 wildlife conservation nonprofits worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to wildlife conservation 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 22, 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 22, 2026
2Indirect evidenceGland, SwitzerlandHQ checked Sep 22, 20261,001-5,0003,763 contacts →

Indirect evidence

“Nature is our life-support system.”

Source: RevenueBase Database · checked Sep 22, 2026
3Partial evidenceBronx, NY, United StatesHQ checked Sep 22, 20261,001-5,0003,663 contacts →

Partial evidence

“WCS stands for wildlife and wild places.”

Source: RevenueBase Database · checked Sep 22, 2026
4Indirect evidenceSandy, United StatesHQ checked Sep 22, 20261,001-5,0001,969 contacts →

Indirect evidence

“Passionate about nature, dedicated to saving it.”

Source: RevenueBase Database · checked Sep 22, 2026
5Partial evidenceArlington, VA, United StatesHQ checked Sep 22, 2026501-1,0001,560 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 22, 2026
6Partial evidenceJohannesburg, South AfricaHQ checked Sep 22, 20261,001-5,000982 contacts →

Partial evidence

“As a world leading conservation and hospitality company, we are the proud custodians of our planet's most significant wild places, each chosen to be part of our Collection for a…”

Source: RevenueBase Database · checked Sep 22, 2026
7Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 2026501-1,000942 contacts →

Indirect evidence

“NRDC is the nation's most effective environmental action organization.”

Source: RevenueBase Database · checked Sep 22, 2026
8Strong evidenceLondon, United KingdomHQ checked Sep 22, 20261,001-5,000937 contacts →

Strong evidence

“As the original science-driven conservation organisation, we’re working to restore wildlife in the UK and around the world.”

Source: RevenueBase Database · checked Sep 22, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 2026501-1,000900 contacts →

Indirect evidence

“The National Audubon Society protects birds and the places they need, today and tomorrow, throughout the Americas using science, advocacy, education, and on-the-ground…”

Source: RevenueBase Database · checked Sep 22, 2026
10Partial evidenceSingaporeHQ checked Sep 22, 20261,001-5,000874 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidenceCincinnati, OH, United StatesHQ checked Sep 22, 2026201-500635 contacts →

Indirect evidence

“Adventure.”

Source: RevenueBase Database · checked Sep 22, 2026
12Partial evidenceBryanston, South AfricaHQ checked Sep 22, 20261,001-5,000625 contacts →

Partial evidence

“African Parks is a non-profit conservation organisation that takes on responsibility for the long-term management of protected areas in partnership with governments and local…”

Source: RevenueBase Database · checked Sep 22, 2026
13Indirect evidenceKenyaHQ checked Sep 22, 2026201-500588 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
14Strong evidenceReston, VA, United StatesHQ checked Sep 22, 2026201-500585 contacts →

Strong 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 22, 2026
15Indirect evidenceCambridge, United KingdomHQ checked Sep 22, 2026501-1,000576 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 22, 2026
16Partial evidenceLincoln, MA, United StatesHQ checked Sep 22, 2026201-500554 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
17Indirect evidenceParkville, United StatesHQ checked Sep 22, 2026501-1,000511 contacts →

Indirect evidence

“Zoos Victoria operates four world-class zoos: Melbourne Zoo, Healesville Sanctuary, Werribee Open Range Zoo and Kyabram Fauna Park.”

Source: RevenueBase Database · checked Sep 22, 2026
18Strong evidenceMosman, AustraliaHQ checked Sep 22, 2026501-1,000506 contacts →

Strong evidence

“Taronga Conservation Society Australia is a not-for-profit organisation that is committed to securing a future for wildlife.”

Source: RevenueBase Database · checked Sep 22, 2026
19Indirect evidenceBoston, MA, United StatesHQ checked Sep 22, 2026201-500502 contacts →

Indirect evidence

“The mission of the Massachusetts Society for the Prevention of Cruelty to Animals is to protect animals, relieve their suffering, advance their health and welfare, prevent…”

Source: RevenueBase Database · checked Sep 22, 2026
20Partial evidenceAtlanta, GA, United StatesHQ checked Sep 22, 2026201-500500 contacts →

Partial evidence

“Vision We envision a world where wildlife and humans flourish together.”

Source: RevenueBase Database · checked Sep 22, 2026
21Indirect evidenceSt Aignan, FranceHQ checked Sep 22, 2026501-1,000448 contacts →

Indirect evidence

“Le ZooParc de Beauval n’est pas seulement un lieu d’accueil pour les espèces animales menacées d’extinction dans la nature.”

Source: RevenueBase Database · checked Sep 22, 2026
22Strong evidenceBrookfield, IL, United StatesHQ checked Sep 22, 2026501-1,000441 contacts →

Strong evidence

“The mission of Brookfield Zoo Chicago is to inspire conservation leadership by connecting people to wildlife and nature.”

Source: RevenueBase Database · checked Sep 22, 2026
23Strong evidenceDenver, CO, United StatesHQ checked Sep 22, 2026201-500413 contacts →

Strong evidence

“For 129 years, Denver Zoo Conservation Alliance has connected people with wildlife.”

Source: RevenueBase Database · checked Sep 22, 2026
24Partial evidenceBerlin, GermanyHQ checked Sep 22, 2026201-500398 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 22, 2026
25Indirect evidenceBoston, MA, United StatesHQ checked Sep 22, 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 22, 2026

Showing 25 of 3,954 wildlife conservation nonprofits worldwide

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Wildlife conservation nonprofits worldwide at a glance

As of Sep 22, 2026
28.7%Verified-email coverage
21.4Average contacts per company
1-10Median size (employees)
1.3%Largest-city concentration · London
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
2,407
11-50
1,022
51-200
345
201-500
108
501-1,000
20
1,001-5,000
17
5,001-10,000
8
10001+
4

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 wildlife conservation 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 wildlife conservation nonprofits are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “wildlife conservation 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 wildlife conservation 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 wildlife conservation 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, 24,240 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 22, 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.

Wildlife conservation nonprofits by location

16 lists · largest first

Every Wildlife conservation 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 wildlife conservation 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 wildlife conservation nonprofits are there worldwide?

RevenueBase identified 3,954 wildlife conservation 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 wildlife conservation nonprofits?

The United States leads with 1,089 companies, followed by India (259) and the United Kingdom (224). Every wildlife conservation nonprofits list by country and city is linked on this page.

Which city has the most wildlife conservation nonprofits?

London leads with 51 headquartered companies, followed by New York (28) and Washington (25).

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 24,240 verified decision-maker contacts tracked across these 3,954 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 22, 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.