Company lists · Data refreshed September 2026

Top 25 Anti-corruption organizations based in the United States

Name: Anti-corruption organizations based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 150 companies tracked

RevenueBase identified 150 anti-corruption organizations headquartered in the United States as of September 2026 and tracks 2,582 professional contacts across them, including 958 with verified work emails. Washington is the largest hub.

This list covers anti-corruption organizations 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 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

150Companies

2,582Contacts tracked

958Verified emails

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The 25 largest anti-corruption organizations based in the United States

Ranked by team size

Top 25 of 150 anti-corruption organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to anti-corruption 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	Government Accountability Project	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	227 contacts →
	Indirect evidence “Government Accountability Project is the nation’s leading whistleblower protection and advocacy organization.” Source: RevenueBase Database · checked Sep 19, 2026
2	Common Cause	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	217 contacts →
	Indirect evidence “Common Cause is a nonpartisan, grassroots organization dedicated to restoring the core values of American democracy, reinventing an open, honest and accountable government that…” Source: RevenueBase Database · checked Sep 19, 2026
3	Open Government Partnership	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	167 contacts →
	Indirect evidence “The Open Government Partnership (OGP) is a multi-stakeholder initiative focused on improving government transparency, accountability and people's participation.” Source: RevenueBase Database · checked Sep 19, 2026
4	Accountability LAB	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	149 contacts →
	Indirect evidence “Our vision is a world in which people with power are accountable.” Source: RevenueBase Database · checked Sep 19, 2026
5	AVAAZ	Indirect evidence	York, United StatesHQ checked Sep 19, 2026	51-200	145 contacts →
	Indirect evidence “Avaaz - meaning "voice" in several European, Middle Eastern and Asian languages - launched in 2007 with a simple democratic mission: organise citizens of all nations to close the…” Source: RevenueBase Database · checked Sep 19, 2026
6	International Budget Partnership	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	85 contacts →
	Indirect evidence “The International Budget Partnership collaborates with civil society organizations around the world to improve governance and ensure that scarce public resources are used…” Source: RevenueBase Database · checked Sep 19, 2026
7	Trace International, INC	Partial evidence	Annapolis, MD, United StatesHQ checked Sep 19, 2026	11-50	80 contacts →
	Partial evidence “TRACE is a non-profit international business association dedicated to anti-bribery, compliance and good governance.” Source: RevenueBase Database · checked Sep 19, 2026
8	Judicial Watch	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	73 contacts →
	Indirect evidence “Judicial Watch, Inc, a conservative, non-partisan educational foundation, promotes transparency, accountability and integrity in government, politics and the law.” Source: RevenueBase Database · checked Sep 19, 2026
9	International Consortium Of Investigative Journalists Icij	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	72 contacts →
	Indirect evidence “The International Consortium of Investigative Journalists tells stories that show how the world really works, triggering positive change.” Source: RevenueBase Database · checked Sep 19, 2026
10	Project On Government Oversight	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	64 contacts →
	Partial evidence “Founded in 1981, the Project On Government Oversight (POGO) is an independent nonprofit that investigates and exposes corruption and other misconduct in order to achieve a more…” Source: RevenueBase Database · checked Sep 19, 2026
11	Association Of Certified Financial Crime Specialists - Acfcs	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 19, 2026	11-50	59 contacts →
	Indirect evidence “The Association of Certified Financial Crime Specialists (ACFCS) is a worldwide organization for private and public sector professionals who work in diverse financial crime…” Source: RevenueBase Database · checked Sep 19, 2026
12	Issue ONE	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	54 contacts →
	Indirect evidence “WHO WE ARE: Issue One is the nation's leading political reform organization-uniting Republicans, Democrats, and independents around one goal: a democracy that actually works for…” Source: RevenueBase Database · checked Sep 19, 2026
13	Citizens For Responsibility And Ethics In Washington Crew	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	53 contacts →
	Indirect evidence “At CREW, we use aggressive legal actions, in-depth investigations, and innovative policy and reform work to achieve that vision.” Source: RevenueBase Database · checked Sep 19, 2026
14	Open Contracting Partnership	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	37 contacts →
	Indirect evidence “Open Contracting Partnership aims to open up and transform public procurement to deliver fairer and better results for people, prosperity, and the planet.” Source: RevenueBase Database · checked Sep 19, 2026
15	American Oversight	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	37 contacts →
	Indirect evidence “American Oversight is a nonpartisan, nonprofit watchdog that advances truth, accountability, and democracy by enforcing the public’s right to government records.” Source: RevenueBase Database · checked Sep 19, 2026
16	Committee Of Seventy	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	n/a	36 contacts →
	Indirect evidence “The Committee of Seventy has been called a "government watchdog,""the elections people" and a "think tank." We're all three and much more.” Source: RevenueBase Database · checked Sep 19, 2026
17	American Economic Liberties Project	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	35 contacts →
	Partial evidence “The American Economic Liberties Project launched in February 2020 to help translate the intellectual victories of the anti-monopoly movement into momentum towards concrete…” Source: RevenueBase Database · checked Sep 19, 2026
18	Representus	Strong evidence	Florence, MA, United StatesHQ checked Sep 19, 2026	51-200	35 contacts →
	Strong evidence “RepresentUs is the nation’s largest grassroots anti-corruption campaign.” Source: RevenueBase Database · checked Sep 19, 2026
19	Global Financial Integrity	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence “Global Financial Integrity (GFI) is a Washington, DC-based think tank, producing high-caliber analyses of illicit financial flows, advising developing country governments on…” Source: RevenueBase Database · checked Sep 19, 2026
20	Better Government Association	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	31 contacts →
	Partial evidence “The BGA works for integrity, transparency, and accountability in government by exposing corruption and inefficiency; identifying and advocating effective public policy; and…” Source: RevenueBase Database · checked Sep 19, 2026
21	Center For International Policy	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “The Center for International Policy promotes cooperation, transparency and accountability in global relations.” Source: RevenueBase Database · checked Sep 19, 2026
22	International Economic Justice League, INC	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “Developing a corrupt-free system of commerce, using education and mentoring, in all countries desiring economic justice for their citizens.” Source: RevenueBase Database · checked Sep 19, 2026
23	Association Of Inspectors General	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1-10	16 contacts →
	Indirect evidence “The nonprofit and nonpartisan Association of Inspectors General (AIG) supports independent offices of inspector general in their fight to combat government waste, fraud and abuse.” Source: RevenueBase Database · checked Sep 19, 2026
24	Free Speech For People	Partial evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “Free Speech For People is a national legal nonprofit nonpartisan organization, catalyzing leader in the country challenging big money in politics, confronting corruption at the…” Source: RevenueBase Database · checked Sep 19, 2026
25	Partnership For Transparency	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	15 contacts →
	Partial evidence “Partnership for Transparency (PTF) works to advance innovative citizen-led approaches to improve governance, increase transparency, promote the rule of law and reduce corruption…” 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: anti-corruption 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 anti-corruption organizations.
Partial evidence: Its own public description names part of anti-corruption organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name anti-corruption 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 150 anti-corruption organizations based in the United States

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Anti-corruption organizations based in the United States at a glance

As of Sep 19, 2026

37.1%Verified-email coverage

17.2Average contacts per company

1-10Median size (employees)

28.7%Largest-city concentration · Washington

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

10001+

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 150 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 anti-corruption 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 the United States whose own description of what they do matches “anti-corruption 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 anti-corruption 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 anti-corruption organizations, 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, 958 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.

Anti-corruption organizations by metro

Anti-corruption organizations in Washington43

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 anti-corruption 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 anti-corruption organizations are there based in the United States?

RevenueBase identified 150 anti-corruption organizations 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?

Government Accountability Project, headquartered in Washington, tops this list with the largest team on record.

Which city has the most anti-corruption organizations?

Washington leads with 43 headquartered companies, followed by New York (6) and Austin (5).

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 958 verified decision-maker contacts tracked across these 150 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.