Company lists · Data refreshed September 2026

Top 25 Volunteer organizations worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 11,575 companies tracked

RevenueBase identified 11,575 volunteer organizations worldwide as of September 2026 and tracks 204,817 professional contacts across them, including 25,844 with verified work emails. The United States is the largest market and London the largest hub.

This list covers volunteer 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 22, 2026. Country and city lists for volunteer 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 22, 2026 86% judged on-target in blind review

11,575Companies

204,817Contacts tracked

25,844Verified emails

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

The 25 largest volunteer organizations worldwide

Ranked by team size

Top 25 of 11,575 volunteer organizations worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to volunteer 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	Ymca Of The USA	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 22, 2026	n/a	31,282 contacts →
	Indirect evidence “For 175 years, the Y has been a place where meaningful connections help build stronger communities.” Source: RevenueBase Database · checked Sep 22, 2026
2	Scouting America	Indirect evidence	Irving, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	5,563 contacts →
	Indirect evidence “Scouting America (formerly Boy Scouts of America) is one of the largest Scouting organizations in the United States of America and one of the largest youth organizations in the…” Source: RevenueBase Database · checked Sep 22, 2026
3	Cruz Roja Mexicana I.A.P	Indirect evidence	México, MexicoHQ checked Sep 22, 2026	5,001-10,000	2,885 contacts →
	Indirect evidence “Nuestra misión es ofrecer atención eficiente a la población en casos de emergencia y en situaciones de desastre, impulsando acciones tendientes a incrementar la capacidad de las…” Source: RevenueBase Database · checked Sep 22, 2026
4	Ymca Of Greater Toronto	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 22, 2026	5,001-10,000	2,575 contacts →
	Indirect evidence “Everyone deserves a chance to shine.” Source: RevenueBase Database · checked Sep 22, 2026
5	Johanniter-Unfall-Hilfe E.V	Indirect evidence	Berlin, GermanyHQ checked Sep 22, 2026	10001+	2,183 contacts →
	Indirect evidence “Wir suchen: Wir suchen Mitarbeiter/innen für unsere Bereiche Pflege, Rettung, Bildung und Erziehung sowie unsere zahlreichen Aufgaben in der Verwaltung (Vertrieb, Marketing…” Source: RevenueBase Database · checked Sep 22, 2026
6	Unis-Cite	Indirect evidence	Paris, FranceHQ checked Sep 22, 2026	501-1,000	2,044 contacts →
	Indirect evidence “L’association Unis-Cité est née de ce rêve : qu’un jour tous les jeunes en France consacrent une étape de leur vie à la collectivité, et que cette expérience citoyenne soit un…” Source: RevenueBase Database · checked Sep 22, 2026
7	United Nations Volunteers	Strong evidence	Bonn, GermanyHQ checked Sep 22, 2026	5,001-10,000	1,799 contacts →
	Strong evidence “United Nations Volunteers (UNV) is the UN organization that contributes to peace and development through volunteerism worldwide.” Source: RevenueBase Database · checked Sep 22, 2026
8	Resala Charity Organization جمعية رسالة للأعمال الخيرية	Indirect evidence	اخر الشارع يمين, EgyptHQ checked Sep 22, 2026	10001+	1,678 contacts →
	Indirect evidence “Resala was established in as a youth movement at Cairo University and Sherif Abd Al Azim, an engineering professor, supervised the movement.” Source: RevenueBase Database · checked Sep 22, 2026
9	Philippine RED Cross	Strong evidence	Mandaluyong City, PhilippinesHQ checked Sep 22, 2026	501-1,000	1,671 contacts →
	Strong evidence “The Philippine Red Cross is a non-profit, donor-funded, volunteer, humanitarian organization.” Source: RevenueBase Database · checked Sep 22, 2026
10	Humanitas	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 22, 2026	10001+	1,529 contacts →
	Indirect evidence “Humanitas is er voor mensen die op eigen kracht iets willen doen aan een situatie.” Source: RevenueBase Database · checked Sep 22, 2026
11	Danish RED Cross	Indirect evidence	København Ø, DenmarkHQ checked Sep 22, 2026	501-1,000	1,348 contacts →
	Indirect evidence “We invite you to join the community of Danish Red Cross.” Source: RevenueBase Database · checked Sep 22, 2026
12	ST John WA	Indirect evidence	Belmont, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,203 contacts →
	Indirect evidence “St John WA (SJWA) is a social enterprise committed to enhancing the health and wellbeing of the WA community we serve.” Source: RevenueBase Database · checked Sep 22, 2026
13	Endeavors	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,137 contacts →
	Indirect evidence “Endeavors is a national service organization that serves our communities’ most vulnerable populations.” Source: RevenueBase Database · checked Sep 22, 2026
14	Norwegian RED Cross	Indirect evidence	Oslo, NorwayHQ checked Sep 22, 2026	201-500	850 contacts →
	Indirect evidence “Røde Kors er verdens største humanitære organisasjon og er politisk og religiøst uavhengig.” Source: RevenueBase Database · checked Sep 22, 2026
15	Student Conservation Association	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 22, 2026	201-500	795 contacts →
	Indirect evidence “The Student Conservation Association (SCA) is the largest provider of hands-on environmental conservation programs for youth and adults.” Source: RevenueBase Database · checked Sep 22, 2026
16	Qatar RED Crescent Society Qrcs	Indirect evidence	Doha, QatarHQ checked Sep 22, 2026	1,001-5,000	777 contacts →
	Indirect evidence “الهلال الأحمر القطري منظمة إنسانية هدفها نفوس آمنة وكرامة مصونة، وهي تعمل محلياً ودولياً منذ عام 1978 على تقديم الإغاثة، ودعم التنمية المستدامة، وتمكين المتطوعين.” Source: RevenueBase Database · checked Sep 22, 2026
17	Bronxworks	Indirect evidence	Bronx, NY, United StatesHQ checked Sep 22, 2026	501-1,000	762 contacts →
	Indirect evidence “BronxWorks helps individuals and families improve their economic and social well-being.” Source: RevenueBase Database · checked Sep 22, 2026
18	Team Rubicon	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	n/a	748 contacts →
	Indirect evidence “Team Rubicon is a veteran-led humanitarian organization that serves global communities before, during, and after disasters and crises.” Source: RevenueBase Database · checked Sep 22, 2026
19	Creu Roja A Catalunya	Indirect evidence	Barcelona, SpainHQ checked Sep 22, 2026	1,001-5,000	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, 2026
20	Volunteer For Bangladesh	Strong evidence	Dhaka, BangladeshHQ checked Sep 22, 2026	10001+	680 contacts →
	Strong evidence “Volunteer for Bangladesh is a nation-wide association of Volunteer Action Groups that work for the betterment of their individual communities and the nation as a whole.” Source: RevenueBase Database · checked Sep 22, 2026
21	Cruz Roja Argentina	Indirect evidence	Balvanera, ArgentinaHQ checked Sep 22, 2026	1,001-5,000	654 contacts →
	Indirect evidence “Cuenta oficial de Cruz Roja Argentina.” Source: RevenueBase Database · checked Sep 22, 2026
22	FDF	Indirect evidence	København V, DenmarkHQ checked Sep 22, 2026	n/a	633 contacts →
	Indirect evidence “FDF er et frirum for børn - her bliver man ikke til noget, man bliver til nogen.” Source: RevenueBase Database · checked Sep 22, 2026
23	Finnish RED Cross	Indirect evidence	Helsinki, FinlandHQ checked Sep 22, 2026	1,001-5,000	600 contacts →
	Indirect evidence “Finnish Red Cross is the one of the largest civic organizations in Finland.” Source: RevenueBase Database · checked Sep 22, 2026
24	Aiesec In Vietnam	Indirect evidence	Hồ Chí Minh, VietnamHQ checked Sep 22, 2026	1,001-5,000	597 contacts →
	Indirect evidence “Thành lập từ năm 1948, AIESEC là tổ chức thanh niên quốc tế phi chính phủ và không vì lợi nhuận, giúp người trẻ phát triển năng lực lãnh đạo thông qua các cơ hội tình nguyện, thực…” Source: RevenueBase Database · checked Sep 22, 2026
25	Society Of St. Vincent DE Paul	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 22, 2026	51-200	594 contacts →
	Indirect evidence “The Society of St.” Source: RevenueBase Database · checked Sep 22, 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: 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 11,575 volunteer organizations worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 25,844 reachable decision-makers.

Free signup · no credit card

View the full list →

Volunteer organizations worldwide at a glance

As of Sep 22, 2026

12.6%Verified-email coverage

17.7Average contacts per company

1-10Median size (employees)

1.1%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

5,835

11-50

3,233

51-200

1,383

201-500

475

501-1,000

217

1,001-5,000

188

5,001-10,000

10001+

110

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 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.
Coverage: Every country. Country and city lists for volunteer organizations are linked below.
What qualifies: Companies worldwide 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.
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, 25,844 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 location

34 lists · largest first

Every Volunteer organizations 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 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 worldwide?

RevenueBase identified 11,575 volunteer 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?

Ymca Of The USA, headquartered in Chicago, tops this list with the largest team on record.

Which country has the most volunteer organizations?

The United States leads with 2,730 companies, followed by India (807) and France (691). Every volunteer organizations list by country and city is linked on this page.

Which city has the most volunteer organizations?

London leads with 124 headquartered companies, followed by Paris (104) and Sao Paulo (89).

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 25,844 verified decision-maker contacts tracked across these 11,575 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.

Ready to reach these companies? Verified emails and direct dials for all 11,575 volunteer organizations worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.