Company lists · Data refreshed November 2026

Top 25 Biodiversity nonprofits worldwide

Name: Biodiversity nonprofits worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 11,141 companies tracked

RevenueBase identified 11,141 company matches for biodiversity nonprofits worldwide as of November 2026 and tracks 160,159 professional contacts across them, including 43,581 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for biodiversity nonprofits worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for biodiversity nonprofits follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

11,141Companies

160,159Contacts tracked

43,581Verified emails

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The 25 largest biodiversity nonprofits worldwide

Ranked by team size

Top 25 of 11,141 company matches for biodiversity nonprofits worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	The Nature Conservancy	Exact match	Arlington, NC, United StatesHQ recorded Nov 6, 2026	5,001-10,000	6,991 contacts →
	Exact match “Air, water, food, shelter, income: nature sustains every aspect of our lives.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	WWF	Exact match	Gland, SwitzerlandHQ recorded Nov 6, 2026	1,001-5,000	3,922 contacts →
	Exact match “Nature is our life-support system.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Wildlife Conservation Society	Exact match	Bronx, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,872 contacts →
	Exact match “WCS stands for wildlife and wild places.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Greenpeace	Exact match	Amsterdam, NetherlandsHQ recorded Nov 6, 2026	n/a	3,207 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	RSPB	Exact match	Sandy, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,109 contacts →
	Exact match “Passionate about nature, dedicated to saving it.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	IUCN	Exact match	Gland, SwitzerlandHQ recorded Nov 6, 2026	501-1,000	1,996 contacts →
	Exact match “IUCN, the International Union for Conservation of Nature, helps the world find pragmatic solutions to our most pressing environment and development challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Conservation International	Exact match	Arlington, VA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,622 contacts →
	Exact match “Since 1987, Conservation International has worked to spotlight and secure the critical benefits that nature provides to humanity.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Environmental Defense Fund	Exact match	New York, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,446 contacts →
	Exact match “We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	World Wildlife Fund	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,384 contacts →
	Exact match “Our planet faces many big conservation challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	World Resources Institute	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,369 contacts →
	Exact match “WRI works to improve people’s lives, protect and restore nature and stabilize the climate.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Natural Resources Defense Council Nrdc	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	1,011 contacts →
	Exact match “NRDC is the nation's most effective environmental action organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Zoological Society Of London ZSL	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	999 contacts →
	Exact match “As the original science-driven conservation organisation, we’re working to restore wildlife in the UK and around the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	National Audubon Society	Exact match	New York, DC, United StatesHQ recorded Nov 6, 2026	501-1,000	953 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Student Conservation Association	Exact match	Arlington, WA, United StatesHQ recorded Nov 6, 2026	201-500	880 contacts →
	Exact match “The Student Conservation Association (SCA) is the largest provider of hands-on environmental conservation programs for youth and adults.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Koppert	Exact match	Berkel En Rodenrijs, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	878 contacts →
	Exact match “To make our world more sustainable, we need ways of growing that are both safe and healthy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Monterey BAY Aquarium	Exact match	Monterey, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	795 contacts →
	Exact match “The mission of the nonprofit Monterey Bay Aquarium is to inspire conservation of the ocean.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	African Parks Network	Exact match	Bryanston, South AfricaHQ recorded Nov 6, 2026	1,001-5,000	695 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	South African National Biodiversity Institute	Exact match	South AfricaHQ recorded Nov 6, 2026	501-1,000	656 contacts →
	Exact match “SANBI is a comapny that manages the 9 national botanical gardens in the country and it monitors and reports to the Minister of Water and Environmental Affairs on the status of the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Cincinnati ZOO & Botanical Garden	Exact match	Cincinnati, OH, United StatesHQ recorded Nov 6, 2026	201-500	636 contacts →
	Exact match “Adventure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	National Wildlife Federation	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	201-500	622 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Naturalis Biodiversity Center	Exact match	Leiden, NetherlandsHQ recorded Nov 6, 2026	501-1,000	619 contacts →
	Exact match “We are Naturalis Biodiversity Center.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Fauna & Flora	Exact match	Cambridge, United KingdomHQ recorded Nov 6, 2026	501-1,000	606 contacts →
	Exact match “Fauna & Flora's work spans across the globe, with over 100 projects in more than 40 countries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Mass Audubon	Exact match	Lincoln, MA, United StatesHQ recorded Nov 6, 2026	201-500	575 contacts →
	Exact match “Mass Audubon is the largest nature-based conservation organization in New England.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Shedd Aquarium	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	201-500	571 contacts →
	Exact match “At Shedd Aquarium, we spark compassion, curiosity and conservation for the aquatic animal world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Biotope	Exact match	Mèze, FranceHQ recorded Nov 6, 2026	201-500	555 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “biodiversity nonprofits”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 11,141 biodiversity nonprofits worldwide

See the full list, filter by size, metro and specialty, and access 43,581 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Biodiversity nonprofits worldwide at a glance

As of Nov 6, 2026

27.2%Verified-email coverage

14.4Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

7,262

11-50

2,763

51-200

720

201-500

204

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for biodiversity nonprofits are linked below.
What qualifies: Company records worldwide whose business descriptions match “biodiversity nonprofits” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 43,581 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Biodiversity nonprofits by location

61 lists · largest first

Every Biodiversity nonprofits list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “biodiversity nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many biodiversity nonprofits are there worldwide?

RevenueBase identified 11,141 company matches for biodiversity nonprofits worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

The Nature Conservancy tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most biodiversity nonprofits?

The United States leads with 2,041 companies, followed by India (690) and France (686). Every biodiversity nonprofits list by country and city is linked on this page.

Which city has the most biodiversity nonprofits?

London leads with 147 company records, followed by Paris (117) and Sao Paulo (80).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 43,581 professional contacts with verified work emails tracked across these 11,141 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.