Company lists · Data refreshed September 2026

Top 25 Cancer support organizations worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 4,133 companies tracked

RevenueBase identified 4,133 cancer support organizations worldwide as of September 2026 and tracks 99,178 professional contacts across them, including 23,347 with verified work emails. The United States is the largest market and London the largest hub.

This list covers cancer support 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 cancer support 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

4,133Companies

99,178Contacts tracked

23,347Verified emails

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The 25 largest cancer support organizations worldwide

Ranked by team size

Top 25 of 4,133 cancer support organizations worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to cancer support 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	UT MD Anderson	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	10001+	20,174 contacts →
	Partial evidence “The University of Texas MD Anderson Cancer Center is one of the world’s most respected centers devoted exclusively to cancer patient care, research, education and prevention.” Source: RevenueBase Database · checked Sep 19, 2026
2	American Cancer Society	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	5,001-10,000	7,210 contacts →
	Partial evidence “The American Cancer Society is a leading cancer-fighting organization with a vision to end cancer as we know it, for everyone.” Source: RevenueBase Database · checked Sep 19, 2026
3	Cancer Research UK Cruk	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	4,298 contacts →
	Partial evidence “Cancer Research UK is the world's leading cancer charity dedicated to saving lives through research, influence and information.” Source: RevenueBase Database · checked Sep 19, 2026
4	Peter Maccallum Cancer Centre	Partial evidence	Melbourne, AustraliaHQ checked Sep 19, 2026	1,001-5,000	2,519 contacts →
	Partial evidence “Peter MacCallum Cancer Centre (‘Peter Mac’) is a world leading cancer research, education and treatment centre and Australia’s only public health service dedicated to caring for…” Source: RevenueBase Database · checked Sep 19, 2026
5	King Hussein Cancer Foundation And Center	Partial evidence	Amman, JordanHQ checked Sep 19, 2026	1,001-5,000	2,107 contacts →
	Partial evidence “The King Hussein Cancer Foundation- Governing Body (The Foundation) is an independent, non-governmental, not-for-profit institution founded in 2001 by Royal Decree to combat…” Source: RevenueBase Database · checked Sep 19, 2026
6	Macmillan Cancer Support	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,856 contacts →
	Partial evidence “We're doing whatever it takes to help more people with cancer get the best care the UK has to offer, whoever and wherever they are.” Source: RevenueBase Database · checked Sep 19, 2026
7	Canadian Cancer Society	Partial evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	501-1,000	1,208 contacts →
	Partial evidence “What does it take to take on cancer?” Source: RevenueBase Database · checked Sep 19, 2026
8	Hospital Erasto Gaertner	Indirect evidence	Curitiba, BrazilHQ checked Sep 19, 2026	1,001-5,000	1,049 contacts →
	Indirect evidence “Nos anos de 1920 o câncer era tratado - tanto para médicos, quanto para a sociedade em geral – com tabu, mas o médico Erasto Gaertner via a doença com outros olhos.” Source: RevenueBase Database · checked Sep 19, 2026
9	Kræftens Bekæmpelse Danish Cancer Society	Indirect evidence	København Ø, DenmarkHQ checked Sep 19, 2026	501-1,000	785 contacts →
	Indirect evidence “Vi er en patientforening med tre vigtige hovedformål- Flere overlever kræft - Færre får kræft - Bedre liv med og efter kræft Det gør vi gennem- Forskning - Forebyggelse - Patient-…” Source: RevenueBase Database · checked Sep 19, 2026
10	Susan G. Komen	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	201-500	777 contacts →
	Indirect evidence “In 1980, Nancy G.” Source: RevenueBase Database · checked Sep 19, 2026
11	American Society Of Clinical Oncology Asco	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 19, 2026	201-500	751 contacts →
	Partial evidence “Founded in 1964, the American Society of Clinical Oncology (ASCO) is committed to making a world of difference in cancer care.” Source: RevenueBase Database · checked Sep 19, 2026
12	Catalan Institute Of Oncology	Indirect evidence	L'hospitalet De Llobregat, SpainHQ checked Sep 19, 2026	1,001-5,000	748 contacts →
	Indirect evidence “L’Institut Català d’Oncologia (ICO) és un centre públic, dedicat exclusivament al càncer, que depèn del Departament de Salut del govern autonòmic de Catalunya (Espanya).” Source: RevenueBase Database · checked Sep 19, 2026
13	Solca Guayaquil	Indirect evidence	Guayaquil, EcuadorHQ checked Sep 19, 2026	1,001-5,000	688 contacts →
	Indirect evidence “La Sociedad de Lucha Contra el Cáncer (SOLCA) del Ecuador fue fundada el 7 de diciembre de 1951.” Source: RevenueBase Database · checked Sep 19, 2026
14	KESEM	Strong evidence	Covina, CA, United StatesHQ checked Sep 19, 2026	n/a	678 contacts →
	Strong evidence “Kesem is the leading national nonprofit supporting children facing a parent’s cancer.” Source: RevenueBase Database · checked Sep 19, 2026
15	Solca Quito	Indirect evidence	Quito, EcuadorHQ checked Sep 19, 2026	1,001-5,000	563 contacts →
	Indirect evidence “La misión de SOLCA Quito es conducir la lucha contra el cáncer, a través de la promoción, educación, prevención, diagnostico precoz y tratamiento oportuno, con el fin de disminuir…” Source: RevenueBase Database · checked Sep 19, 2026
16	Ligue Contre LE Cancer	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	201-500	515 contacts →
	Partial evidence “Créée en 1918, la Ligue contre le cancer est une association loi 1901 reconnue d’utilité publique reposant sur la générosité du public et sur l’engagement de ses bénévoles et…” Source: RevenueBase Database · checked Sep 19, 2026
17	Instituto Nacional DE Enfermedades Neoplàsicas	Indirect evidence	PeruHQ checked Sep 19, 2026	1,001-5,000	477 contacts →
	Indirect evidence “Organizaciòn orientada a la investigaciòn y tratamiento del càncer.” Source: RevenueBase Database · checked Sep 19, 2026
18	Fundação Cristiano Varella	Indirect evidence	Muriaé, BrazilHQ checked Sep 19, 2026	1,001-5,000	457 contacts →
	Indirect evidence “Desde 1995, a Fundação Cristiano Varella, criada por Lael Varella em memória de seu filho Cristiano, se destaca como um pilar no combate ao câncer.” Source: RevenueBase Database · checked Sep 19, 2026
19	The Princess Margaret Cancer Foundation	Partial evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	448 contacts →
	Partial evidence “The Princess Margaret Cancer Foundation works with its passionate community to raise crucial funds for world-leading cancer research & care at Princess Margaret Cancer Centre.” Source: RevenueBase Database · checked Sep 19, 2026
20	Breast Cancer NOW	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	445 contacts →
	Partial evidence “We’re the UK’s leading breast cancer charity.” Source: RevenueBase Database · checked Sep 19, 2026
21	Cancer Council Victoria	Partial evidence	East Melbourne, AustraliaHQ checked Sep 19, 2026	201-500	419 contacts →
	Partial evidence “A not-for-profit organisation, Cancer Council Victoria has played a leading and holistic role in cancer control for more than 80 years.” Source: RevenueBase Database · checked Sep 19, 2026
22	Saskatchewan Cancer Agency	Partial evidence	Regina, SK, CanadaHQ checked Sep 19, 2026	501-1,000	411 contacts →
	Partial evidence “To provide leadership in health promotion, early detection, treatment, and research for cancer.” Source: RevenueBase Database · checked Sep 19, 2026
23	KWF Kankerbestrijding	Partial evidence	Amsterdam, NetherlandsHQ checked Sep 19, 2026	51-200	392 contacts →
	Partial evidence “Every person in the Netherlands will at some stage have an experience with cancer When you have cancer, it disrupts your life, but also when someone you know has the disease.” Source: RevenueBase Database · checked Sep 19, 2026
24	American Association For Cancer Research	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	201-500	349 contacts →
	Partial evidence “Founded in 1907, the American Association for Cancer Research (AACR) is the world’s first and largest professional organization dedicated to advancing cancer research and its…” Source: RevenueBase Database · checked Sep 19, 2026
25	Young Lives VS Cancer	Partial evidence	Bristol, United KingdomHQ checked Sep 19, 2026	201-500	338 contacts →
	Partial evidence “We’re the charity that helps young people and their families find the strength to face everything cancer throws at them.” 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: cancer support 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 cancer support organizations.
Partial evidence: Its own public description names part of cancer support organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cancer support 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 4,133 cancer support organizations worldwide

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Cancer support organizations worldwide at a glance

As of Sep 19, 2026

23.5%Verified-email coverage

24.0Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

2,745

11-50

939

51-200

262

201-500

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cancer support 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 cancer support organizations are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “cancer support 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 cancer support 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 cancer support 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, 23,347 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.

Cancer support organizations by location

18 lists · largest first

Every Cancer support 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 cancer support 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 cancer support organizations are there worldwide?

RevenueBase identified 4,133 cancer support 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?

UT MD Anderson, headquartered in Houston, tops this list with the largest team on record.

Which country has the most cancer support organizations?

The United States leads with 1,444 companies, followed by the United Kingdom (253) and France (196). Every cancer support organizations list by country and city is linked on this page.

Which city has the most cancer support organizations?

London leads with 64 headquartered companies, followed by New York (38) and Toronto (37).

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 23,347 verified decision-maker contacts tracked across these 4,133 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.