Company lists · Data refreshed September 2026
Top 25 Volunteer organizations based in Spain
RevenueBase identified 202 volunteer organizations headquartered in Spain as of September 2026 and tracks 2,750 professional contacts across them, including 314 with verified work emails. Madrid is the largest hub.
This list covers volunteer organizations 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 22, 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.
The 25 largest volunteer organizations based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 682 contacts → | ||||
Indirect evidence “La Creu Roja és una organització humanitària que treballa en els àmbits de Salut, els Socors i les Emergències, la Cooperació Internacional, la Intervenció Social, el Medi…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 318 contacts → | ||||
Indirect evidence “WESSER and PARTNER, multinacional líder en Europa en la captación de fondos Face to Face (fundraising), especializada en el ámbito de las ONG.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 150 contacts → | ||||
Indirect evidence “entidad que se dedica a la promoción social y en especial tienen servicios dedicados a la formación de voluntariado y profesionales, servicios de consultoría organizacional y…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 113 contacts → | ||||
Indirect evidence “Fundación Esplai, Ciudadanía comprometida es una organización de ámbito estatal creada en que comparte proyecto con Fundesplai (Fundació Catalana de l’ Esplai).” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 102 contacts → | ||||
Indirect evidence “La Fundación FISAT Salesianos Social es una entidad sin ánimo de lucro que trabaja por una juventud protagonista de su vida.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 85 contacts → | ||||
Indirect evidence “Fundada en 1873, Cruz roja es una organización humanitaria de carácter voluntario, que pretende estar cada vez más cerca de las personas vulnerables en el ámbito de la regional.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 65 contacts → | ||||
Indirect evidence “Minyons Escoltes i Guies de Catalunya (MEG) som una entitat d’educació en el lleure sense ànim de lucre que oferim als nens, nenes i joves l’aventura de créixer i aprendre…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 48 contacts → | ||||
Indirect evidence “Acompanyem i empoderem a petits, joves i adults perquè siguin protagonistes de la millora de les seves vides i del seu entorn.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 45 contacts → | ||||
Indirect evidence “Jovesolides originates from a project in a Valencian neighbourhood promoted by young students dedicated to the environment connected to participation and social commitment.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 36 contacts → | ||||
Indirect evidence “ESN Spain is one of the 42 countries members of Erasmus Student Network, the biggest interdisciplinary organization of voluntary students in Europe.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 31 contacts → | ||||
Indirect evidence “BarcelonActua es una comunitat de més membres que potencia l'ajuda mútua i la implicació de les persones en l'acció social del seu entorn més proper.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 29 contacts → | ||||
Indirect evidence “En Hazloposible creemos que cada persona puede ser protagonista en la creación de un mundo más justo y sostenible.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 28 contacts → | ||||
Indirect evidence “La Plataforma del Voluntariado de España (PVE) es una organización de ámbito estatal que promueve el voluntariado en todos sus ámbitos.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 25 contacts → | ||||
Strong evidence “Cooperating Volunteers is a social enterprise dedicated to community development through international volunteer experiences.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 22 contacts → | ||||
Indirect evidence “Nadiesolo es una Fundación Benéfico Asistencial, que desarrolla programas de voluntariado para acompañar a personas que sufren soledad no deseada por enfermedad, dependencia…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 21 contacts → | ||||
Indirect evidence “SOLIDARIOS lucha contra la exclusión desde el voluntariado y la concienciación social.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 17 contacts → | ||||
Indirect evidence “Non profit organization” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 15 contacts → | ||||
Indirect evidence “Promovem l'educació en valors en el temps lliure, l'associacionisme i el voluntariat.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 contacts → | ||||
Strong evidence “ASCASUD, Association of social volunteering, collaborates with entrepreneurs, small and medium-sized companies in the management of their projects and to give course to the…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 9 contacts → | ||||
Indirect evidence “La Coordinadora Valenciana de ONGD somos una red compuesta por más de 100 ONGD de la Comunitat Valenciana que trabajamos por un mundo más justo, feminista y sostenible.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Indirect evidence “Nuestra Misión es trabajar unidos para brindar oportunidades a otros; atender a los más desafortunados y ofrecerles esperanza; situar a los demás entre las prioridades personales…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 contacts → | ||||
Indirect evidence “Buscamos empodera a los jóvenes a través de la educación no formal, la movilidad y el emprendimiento.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Indirect evidence “BizkaiaGara recoge el testigo de bolunta aspirando a convertirse en un referente del voluntariado de Bizkaia.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 contacts → | ||||
Indirect evidence “La Asociación BIOagradables es un colectivo de voluntarios activistas por el medio ambiente.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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: volunteer 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 volunteer organizations.
- Partial evidence
- Its own public description names part of volunteer organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name volunteer 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 202 volunteer organizations based in Spain
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Volunteer organizations based in Spain at a glance
As of Sep 22, 2026Companies by employee count
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 202 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 volunteer 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.
- What qualifies
- Companies headquartered in Spain whose own description of what they do matches “volunteer 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 volunteer 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 volunteer organizations, 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, 314 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.
Volunteer organizations by metro
- Volunteer organizations in Madrid42
- Volunteer organizations in Barcelona28
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 volunteer 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 volunteer organizations are there based in Spain?
RevenueBase identified 202 volunteer organizations 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?
Creu Roja A Catalunya, headquartered in Barcelona, tops this list with the largest team on record.
Which city has the most volunteer organizations?
Madrid leads with 42 headquartered companies, followed by Barcelona (28) and Valencia (12).
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 314 verified decision-maker contacts tracked across these 202 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.
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