Company lists · Data refreshed September 2026

Top 25 Endangered species organizations worldwide

Name: Endangered species organizations worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 526 companies tracked

RevenueBase identified 526 endangered species organizations worldwide as of September 2026 and tracks 15,187 professional contacts across them, including 4,894 with verified work emails and 0 with mobile numbers. The United States is the largest market and New York the largest hub.

This list covers endangered species 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 endangered species 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 19, 2026 86% judged on-target in blind review

526Companies

15,187Contacts tracked

4,894Verified emails

0Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest endangered species organizations worldwide

Ranked by team size

Top 25 of 526 endangered species organizations worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to endangered species 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Natural Resources Defense Council Nrdc	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	501-1,000	942 contacts →
	Indirect evidence “NRDC is the nation's most effective environmental action organization.” Source: RevenueBase Database · checked Sep 19, 2026
2	Zoological Society Of London ZSL	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	937 contacts →
	Indirect 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 19, 2026
3	National Wildlife Federation	Indirect evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	201-500	585 contacts →
	Indirect 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
4	Mass Audubon	Indirect evidence	Lincoln, MA, United StatesHQ checked Sep 19, 2026	201-500	554 contacts →
	Indirect evidence “Mass Audubon is the largest nature-based conservation organization in New England.” Source: RevenueBase Database · checked Sep 19, 2026
5	Zoos Victoria	Indirect evidence	Parkville, United StatesHQ checked Sep 19, 2026	501-1,000	511 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 19, 2026
6	Taronga Conservation Society Australia	Indirect evidence	Mosman, AustraliaHQ checked Sep 19, 2026	501-1,000	506 contacts →
	Indirect 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 19, 2026
7	ZOO DE Beauval	Indirect evidence	St Aignan, FranceHQ checked Sep 19, 2026	501-1,000	448 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 19, 2026
8	Birdlife International	Indirect evidence	Cambridge, United KingdomHQ checked Sep 19, 2026	51-200	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, 2026
9	Frankfurt Zoological Society Zoologische Gesellschaft Frankfurt	Indirect evidence	Frankfurt, GermanyHQ checked Sep 19, 2026	1,001-5,000	321 contacts →
	Indirect evidence “The Frankfurt Zoological Society (FZS) was established in 1858 and is an internationally operating conservation organisation based in Frankfurt/Main.” Source: RevenueBase Database · checked Sep 19, 2026
10	Planet Wild	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	n/a	272 contacts →
	Indirect evidence “Planet Wild is a global community of people who care deeply about nature and want to help our planet bounce back.” Source: RevenueBase Database · checked Sep 19, 2026
11	Center For Biological Diversity	Indirect evidence	Tucson, AZ, United StatesHQ checked Sep 19, 2026	51-200	219 contacts →
	Indirect evidence “At the Center for Biological Diversity, we believe that the welfare of human beings is deeply linked to nature, to the existence in our world of a vast diversity of wild animals…” Source: RevenueBase Database · checked Sep 19, 2026
12	Panthera	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	218 contacts →
	Partial evidence “Founded in 2006, Panthera is devoted to the conservation of the world’s 40 species of wild cats and the vast ecosystems they inhabit.” Source: RevenueBase Database · checked Sep 19, 2026
13	Australian Wildlife Conservancy	Indirect evidence	Subiaco, AustraliaHQ checked Sep 19, 2026	201-500	214 contacts →
	Indirect evidence “Australian Wildlife Conservancy (AWC) is a global leader in conservation, working across iconic Australian locations like the Kimberley, Central Australia, Cape York and Kati…” Source: RevenueBase Database · checked Sep 19, 2026
14	Wildlife Trust Of India	Indirect evidence	Noida, IndiaHQ checked Sep 19, 2026	51-200	207 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
15	Defenders Of Wildlife	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	202 contacts →
	Indirect evidence “Defenders of Wildlife is dedicated to the protection of all native animals and plants in their natural communities.” Source: RevenueBase Database · checked Sep 19, 2026
16	Wildlife Works	Partial evidence	Mill Valley, CA, United StatesHQ checked Sep 19, 2026	201-500	188 contacts →
	Partial evidence “Wildlife Works is a community-centered wildlife conservation company that implements market-based initiatives to protect the planet’s threatened wilderness and endangered wildlife.” Source: RevenueBase Database · checked Sep 19, 2026
17	SEA Shepherd Conservation Society	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 19, 2026	n/a	183 contacts →
	Indirect evidence “Established in 1977, Sea Shepherd Conservation Society (SSCS) is an international non-profit, marine wildlife conservation organization.” Source: RevenueBase Database · checked Sep 19, 2026
18	Point Blue Conservation Science	Indirect evidence	Petaluma, CA, United StatesHQ checked Sep 19, 2026	51-200	160 contacts →
	Indirect evidence “Point Blue Conservation Science (Point Blue) is dedicated to conserving birds, other wildlife, and ecosystems through innovative scientific research, restoration, outreach and…” Source: RevenueBase Database · checked Sep 19, 2026
19	Wildlife SOS	Partial evidence	Delhi, IndiaHQ checked Sep 19, 2026	201-500	146 contacts →
	Partial evidence “Wildlife SOS, since it’s inception in 1995, has launched various initiatives to protect India’s endangered animals as well as their natural habitat; including anti-poaching…” Source: RevenueBase Database · checked Sep 19, 2026
20	Wwf-Canada	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	142 contacts →
	Indirect 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 19, 2026
21	Birdlife Australia	Indirect evidence	Carlton, AustraliaHQ checked Sep 19, 2026	51-200	140 contacts →
	Indirect evidence “BirdLife Australia is Australia’s largest bird conservation organisation and is dedicated to stopping bird extinctions.” Source: RevenueBase Database · checked Sep 19, 2026
22	Australian Conservation Foundation	Indirect evidence	Carlton, AustraliaHQ checked Sep 19, 2026	51-200	131 contacts →
	Indirect evidence “We’re the Australian Conservation Foundation, Australia’s national environment organisation.” Source: RevenueBase Database · checked Sep 19, 2026
23	American Bird Conservancy	Indirect evidence	The Plains, VA, United StatesHQ checked Sep 19, 2026	51-200	120 contacts →
	Indirect evidence “American Bird Conservancy (ABC) takes bold action to conserve wild birds and their habitats throughout the Americas.” Source: RevenueBase Database · checked Sep 19, 2026
24	Nature Conservation Foundation	Partial evidence	Mysore, IndiaHQ checked Sep 19, 2026	51-200	116 contacts →
	Partial evidence “NCF is a wildlife research and conservation non-profit that uses both science and sociology to understand and secure wild species and places in India.” Source: RevenueBase Database · checked Sep 19, 2026
25	Ecology Project International	Indirect evidence	Missoula, MT, United StatesHQ checked Sep 19, 2026	51-200	105 contacts →
	Indirect evidence “EPI is a non-profit organization dedicated to developing place-based, ecological education partnerships between local experts and high school students to address critical…” Source: RevenueBase Database · checked Sep 19, 2026

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: endangered species 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 endangered species organizations.
Partial evidence: Its own public description names part of endangered species organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name endangered species 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 526 endangered species organizations worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,894 reachable decision-makers.

Free signup · no credit card

View the full list →

Endangered species organizations worldwide at a glance

As of Sep 19, 2026

32.2%Verified-email coverage

28.9Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

342

11-50

122

51-200

201-500

501-1,000

1,001-5,000

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 endangered species 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: 7 countries, largest first: the United States, India, the United Kingdom, France, Australia, Canada, Germany. Country and city lists for endangered species organizations are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “endangered species 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 endangered species 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 endangered species 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, 4,894 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.

Endangered species organizations by location

7 lists · largest first

Every Endangered species 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 endangered species 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 endangered species organizations are there worldwide?

RevenueBase identified 526 endangered species 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?

Natural Resources Defense Council Nrdc, headquartered in New York, tops this list with the largest team on record.

Which country has the most endangered species organizations?

The United States leads with 290 companies, followed by India (60) and the United Kingdom (42). Every endangered species organizations list by country and city is linked on this page.

Which city has the most endangered species organizations?

New York leads with 13 headquartered companies, followed by London (11) and Washington (9).

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 4,894 verified decision-maker contacts tracked across these 526 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.

Ready to reach these companies? Verified emails and direct dials for all 526 endangered species organizations worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

Browse: Companies home · Lists by location · New lists

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.