Company lists · Data refreshed September 2026
Top 25 Freedom of speech advocacy groups based in the United States
RevenueBase identified 55 freedom of speech advocacy groups headquartered in the United States as of September 2026 and tracks 969 professional contacts across them, including 480 with verified work emails. Washington is the largest hub.
This list covers freedom of speech advocacy groups headquartered in the United States, 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 20, 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 freedom of speech advocacy groups based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 150 contacts → | ||||
Partial evidence “FIRE’s mission is to defend and sustain the individual rights of all Americans to free speech and free thought-the most essential qualities of liberty.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 136 contacts → | ||||
Indirect evidence “The Electronic Frontier Foundation (EFF) is the leading organization defending civil liberties in the digital world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 103 contacts → | ||||
Partial evidence “The First Amendment is the cornerstone of a government by, for and of the people, yet most Americans can’t name the five freedoms it guarantees.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 49 contacts → | ||||
Partial evidence “The Reporters Committee for Freedom of the Press is a nonprofit organization that has provided free legal resources to protect First Amendment freedoms and the newsgathering…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 44 contacts → | ||||
Indirect evidence “The ACLU works daily in the courts and in our communities to defend the individual rights guaranteed by the Constitution and laws of the United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 30 contacts → | ||||
Indirect evidence “EPIC is an independent non-profit research center in Washington, DC.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 29 contacts → | ||||
Partial evidence “Public Knowledge promotes freedom of expression, an open internet, and access to affordable communications tools and creative works.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 23 contacts → | ||||
Partial evidence “There has never been a more important time to take a stand and support the ACLU of New Mexico and our effective work protecting freedom and liberty.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 22 contacts → | ||||
Partial evidence “The National Coalition Against Censorship is dedicated to defending freedom of thought, inquiry and expression.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 21 contacts → | ||||
Indirect evidence “Founded in 1958, the ACLU of Utah is a not-for-profit, nonpartisan organization that utilizes legal, legislative, and public education approaches to fight for individual rights…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 21 contacts → | ||||
Partial evidence “The American Civil Liberties Union of Oregon is an advocacy organization dedicated to defending and advancing civil liberties and civil rights through work in the courts, in the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 20 contacts → | ||||
Partial evidence “The American Civil Liberties Union of Alabama is freedom’s watchdog; we work in the courts, legislatures and communities to defend the individual rights and personal freedoms…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 19 contacts → | ||||
Indirect evidence “The ACLU of Idaho was founded in 1988 and is located in Boise.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 17 contacts → | ||||
Strong evidence “Restoring a resilient global culture of free speech in the digital age through knowledge, research, and advocacy.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 16 contacts → | ||||
Partial evidence “First Amendment Coalition (FAC)| fighting for free speech, a free press and the public’s right to know.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 15 contacts → | ||||
Partial evidence “Fight for the Future is a non-profit organization whose mission is to ensure that the web continues to hold freedom of expression and creativity at its core.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 15 contacts → | ||||
Indirect evidence “La Sociedad Interamericana de Prensa es una organización sin fines de lucro dedicada a defender la libertad de expresión y de prensa en todas las Américas.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 13 contacts → | ||||
Indirect evidence “Through strategic litigation, communication, activism, training, research, and education, we work to promote and defend the First Amendment’s rights freely speak, associate…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 contacts → | ||||
Partial evidence “The Center for Individual Rights is a public interest law firm specializing in free speech issues and dedicated to the defense of individual rights.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 contacts → | ||||
Indirect evidence “The Rutherford Institute is one of the nation's premier civil liberties organizations."-Nat Hentoff, nationally syndicated columnist "When founding The Rutherford Institute, my…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Strong evidence “Brownstone Institute’s purpose and mission is to point the way toward appreciation and protection of essential freedoms – including intellectual freedom and free speech – and the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Strong evidence “UNC AFSA’s mission is to support and defend free speech, viewpoint diversity, and academic freedom at UNC-Chapel Hill.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 contacts → | ||||
Indirect evidence “As leaders in bringing high impact civil rights and First Amendment litigation in defense of justice movements for over 25 years, the Partnership for Civil Justice Fund has…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 contacts → | ||||
Strong evidence “We are a group of alumni, faculty, students and friends of MIT who have come together to advocate for MIT’s support for free speech, open inquiry, and viewpoint diversity.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Partial evidence “NEFAC is a growing 501(c)(3) non-profit non-political organization that advances the five freedoms of the First Amendment and the public’s right to know about government through…” Source: RevenueBase Database · checked Sep 20, 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: freedom of speech advocacy groups. 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 freedom of speech advocacy groups.
- Partial evidence
- Its own public description names part of freedom of speech advocacy groups, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name freedom of speech advocacy groups. 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 55 freedom of speech advocacy groups based in the United States
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Freedom of speech advocacy groups based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 55 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 freedom of speech advocacy groups, 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 the United States whose own description of what they do matches “freedom of speech advocacy groups”. 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 freedom of speech advocacy groups), 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 freedom of speech advocacy groups, and records with no verified work email. Companies headquartered outside United States 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, 480 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 20, 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.
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 freedom of speech advocacy groups, 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 freedom of speech advocacy groups are there based in the United States?
RevenueBase identified 55 freedom of speech advocacy groups headquartered in the United States 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?
Foundation For Individual Rights And Expression, headquartered in Philadelphia, tops this list with the largest team on record.
Which city has the most freedom of speech advocacy groups?
Washington leads with 13 headquartered companies, followed by Chicago (2) and Cleveland (2).
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 480 verified decision-maker contacts tracked across these 55 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 20, 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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