Company lists · Data refreshed September 2026

Top 25 Conservation nonprofits based in Spain

Name: Conservation nonprofits based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 182 companies tracked

RevenueBase identified 182 conservation nonprofits headquartered in Spain as of September 2026 and tracks 974 professional contacts across them, including 114 with verified work emails. Madrid is the largest hub.

This list covers conservation nonprofits headquartered in Spain, 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.

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

182Companies

974Contacts tracked

114Verified emails

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The 25 largest conservation nonprofits based in Spain

Ranked by team size

Top 25 of 182 conservation nonprofits based in Spain, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SEO Birdlife	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	109 contacts →
	Indirect evidence “SEO/BirdLife (Sociedad Española de Ornitología) está orientada a cumplir la función social que nos mueve desde 1954: estudiar y conservar las aves y la naturaleza y divulgar sus…” Source: RevenueBase Database · checked Sep 19, 2026
2	WWF España	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	63 contacts →
	Indirect evidence “Somos la mayor organización de conservación de la naturaleza.” Source: RevenueBase Database · checked Sep 19, 2026
3	Fundación Global Nature	Indirect evidence	Las Rozas De Madrid, SpainHQ checked Sep 19, 2026	11-50	48 contacts →
	Indirect evidence “Somos una fundación privada sin ánimo de lucro dedicada a la protección de la naturaleza.” Source: RevenueBase Database · checked Sep 19, 2026
4	Grefa. Grupo DE Rehabilitación DE LA Fauna Autóctona Y SU Hábitat	Indirect evidence	Monte Del Pilar S/n. Majadahonda (madrid), SpainHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence “GREFA (Grupo de Rehabilitación de la Fauna Autóctona y su Hábitat) es una organización no gubernamental sin ánimo de lucro, que nace en 1981 como asociación para el estudio y…” Source: RevenueBase Database · checked Sep 19, 2026
5	Grupo Silvoturismo	Indirect evidence	Elda, SpainHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “Somos una empresa que en 2025 cumplimos veinticinco años de trayectoria profesional al servicio del medio ambiente.” Source: RevenueBase Database · checked Sep 19, 2026
6	Foundation Ecomar	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	1-10	23 contacts →
	Partial evidence “We are a non-profit organization, founded by Theresa Zabell, which aims to educate and raise awareness, especially children, in the care, respect and conservation of our planet…” Source: RevenueBase Database · checked Sep 19, 2026
7	Submon	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	1-10	22 contacts →
	Partial evidence “Since 2008 SUBMON works for the conservation of marine biodiversity and promotes a more sustainable relationship between society and the sea.” Source: RevenueBase Database · checked Sep 19, 2026
8	Fundació Emys	Partial evidence	Riudarenes, SpainHQ checked Sep 19, 2026	1-10	17 contacts →
	Partial evidence “Fundació Emys is an NGO mainly dedicated in the Natural and Cultural Heritage conservation in Catalunya, Spain.” Source: RevenueBase Database · checked Sep 19, 2026
9	Vitalis, A.C	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	16 contacts →
	Indirect evidence “Somos una organización no gubernamental (ONG) sin fines de lucro, creada en Venezuela el 13 de agosto de con la misión de contribuir a la formación en valores, conocimientos y…” Source: RevenueBase Database · checked Sep 19, 2026
10	ANSE	Indirect evidence	Murcia, SpainHQ checked Sep 19, 2026	1-10	15 contacts →
	Indirect evidence “La Asociación de Naturalistas del Sureste es una organización social sin fines lucrativos, cuyos objetivos son la divulgación, estudio y defensa de la Naturaleza y el Medio…” Source: RevenueBase Database · checked Sep 19, 2026
11	Grup Boix	Indirect evidence	Puig-reig, SpainHQ checked Sep 19, 2026	51-200	14 contacts →
	Indirect evidence “Protecting the forests of today for the world of tomorrow Ensuring the protection, regeneration and survival of our forests to improve their ability to adapt and maintain…” Source: RevenueBase Database · checked Sep 19, 2026
12	Fieb Foundation	Indirect evidence	Tres Cantos, SpainHQ checked Sep 19, 2026	1-10	14 contacts →
	Indirect evidence “Somos una fundación privada, sin ánimo de lucro, dedicada a la protección de la naturaleza.” Source: RevenueBase Database · checked Sep 19, 2026
13	Ocean52	Indirect evidence	Barcelona & Hossegor, SpainHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Ocean52 was created in 2018 with one simple goal in mind – to give more than we take.” Source: RevenueBase Database · checked Sep 19, 2026
14	Cleanwave Foundation	Indirect evidence	Palma, SpainHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “At Cleanwave Foundation,At Cleanwave Foundation, our mission is to safeguard and restore the Mediterranean through holistic marine stewardship.” Source: RevenueBase Database · checked Sep 19, 2026
15	Good Karma Projects	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence “Somos una ONG medioambiental desarrollando proyectos e iniciativas en educación, sensibilización y cambio social para el planeta Good Karma Projects fue fundada en el año 2017 por…” Source: RevenueBase Database · checked Sep 19, 2026
16	Ibiza & Formentera Preservation	Indirect evidence	Ibiza, SpainHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence “Desde hace 2008, IbizaPreservation aspira a conservar el extraordinario valor natural y la belleza de Ibiza y Formentera y a promover iniciativas sostenibles en las islas.” Source: RevenueBase Database · checked Sep 19, 2026
17	Asistencia Técnica Hoolistica S.L.U	Indirect evidence	Sevilla, SpainHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence “Can you imagine a professional group whose aim were to achieve your goals collaborating together to create a more sustainable future?” Hoolistica works covering the whole national…” Source: RevenueBase Database · checked Sep 19, 2026
18	Mallorca Preservation	Indirect evidence	Palma De Mallorca, SpainHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “The Mallorca Preservation Foundation (MAPF) was created in May 2017 with the aim of conserving the amazing beauty and environmental quality of Mallorca in an attempt to transform…” Source: RevenueBase Database · checked Sep 19, 2026
19	Alive Foundation	Partial evidence	L'escala, SpainHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “We want to promote the knowledge of environmental sciences to improve the management and conservation of natural resources, especially in the Mediterranean Sea.” Source: RevenueBase Database · checked Sep 19, 2026
20	Ocean Born Foundation	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Ocean Born Foundation is 100% committed to restoring and protecting the ocean because we believe it is the biggest natural solution available to address climate change.” Source: RevenueBase Database · checked Sep 19, 2026
21	CEA AR	Indirect evidence	San Bartolomé, SpainHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “CEAMAR es una organización científica fundada en 2013 por un grupo de investigadores con más de 10 años de experiencia profesional con cetáceos y tortugas marinas, que trabaja a…” Source: RevenueBase Database · checked Sep 19, 2026
22	Faunatura	Indirect evidence	Torrevieja, SpainHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Faunatura es una organización no gubernamental (ONG) dedicada a la conservación, estudio y defensa de la fauna y flora silvestre, así como de los ecosistemas de los que forman…” Source: RevenueBase Database · checked Sep 19, 2026
23	Nakawe Project	Partial evidence	Mataro, SpainHQ checked Sep 19, 2026	11-50	4 contacts →
	Partial evidence “501(c)3 engaging communities in wildlife conservation & sustainable ecotourism development.” Source: RevenueBase Database · checked Sep 19, 2026
24	mundocreativo.gc	Indirect evidence	Las Palmas De Gran Canaria, SpainHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Mundocreativo es una organización sin ánimo de lucro de turismo sostenible que realiza actividades de difusión, conservación y restauración del medio ambiente.” Source: RevenueBase Database · checked Sep 19, 2026
25	ESS Bioconsulting	Indirect evidence	Valencia, SpainHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “At ESS BioConsulting, we provide comprehensive solutions in environmental consulting, covering a wide range of services, including- BREEAM Certification: Specializing in BREEAM…” 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: conservation nonprofits. 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 conservation nonprofits.
Partial evidence: Its own public description names part of conservation nonprofits, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name conservation nonprofits. 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 182 conservation nonprofits based in Spain

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Conservation nonprofits based in Spain at a glance

As of Sep 19, 2026

11.7%Verified-email coverage

5.4Average contacts per company

1-10Median size (employees)

13.7%Largest-city concentration · Madrid

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

149

11-50

51-200

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 182 companies.

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 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.
What qualifies: Companies headquartered in Spain whose own description of what they do matches “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 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 conservation nonprofits, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
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, 114 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 nonprofits by metro

Conservation nonprofits in Madrid25

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 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 nonprofits are there based in Spain?

RevenueBase identified 182 conservation nonprofits headquartered in Spain 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?

SEO Birdlife, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most conservation nonprofits?

Madrid leads with 25 headquartered companies, followed by Barcelona (21) and Valencia (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 114 verified decision-maker contacts tracked across these 182 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.