| National LGBTQ Task ForceWashington | Form 990 | $4,271,272FY2025 |
| Central American Resource Center- CarecenWashington | Form 990 | $4,210,727FY2025 |
| Education Writers AssociationWashington | Form 990 | $4,167,882FY2025 |
| National Association for Bilingual EducationWashington | Form 990 | $4,081,320FY2025 |
| Society for Personality and Social Psychology IncWashington | Form 990 | $3,958,144FY2025 |
| Urban Libraries CouncilWashington | Form 990 | $3,946,548FY2024 |
| Damien Ministries IncWashington | Form 990 | $3,929,326FY2024 |
| Metro Health IncWashington | Form 990 | $3,888,777FY2021 |
| Federal City CouncilWashington | Form 990 | $3,885,028FY2024 |
| National Communication AssociationWashington | Form 990 | $3,719,431FY2024 |
| National Black Caucus of State LegislatorsWashington | Form 990 | $3,700,079FY2024 |
| National Committee for Responsive PhilanthropyWashington | Form 990 | $3,680,502FY2025 |
| American Civil Liberties Union Fund of the District of ColumbiaWashington | Form 990 | $3,668,386FY2025 |
| Non-Violence InternationalWashington | Form 990 | $3,655,064FY2024 |
| Hortons Kids IncWashington | Form 990 | $3,578,561FY2025 |
| Citizens United FoundationWashington | Form 990 | $3,574,030FY2024 |
| Bnai Brith Housing IncWashington | Form 990 | $3,475,005FY2025 |
| Institute for Credentialing ExcellenceWashington | Form 990 | $3,389,314FY2024 |
| Foundation for Advancement in ConservationWashington | Form 990 | $3,285,162FY2025 |
| International Society for PharmacoepidemiologyWashington | Form 990 | $3,252,371FY2025 |
| Association of Jesuit Colleges and UniversitiesWashington | Form 990 | $3,226,875FY2025 |
| National Conference on CitizenshipWashington | Form 990 | $3,197,174FY2025 |
| Upturn IncWashington | Form 990 | $3,175,373FY2024 |
| National Center for Learning Disabilities IncWashington | Form 990 | $3,111,118FY2024 |
| Committee for a Constructive TomorrowWashington | Form 990 | $3,084,685FY2025 |
| Operation Lifesaver IncWashington | Form 990 | $3,064,844FY2024 |
| Biblical Archaeology SocietyWashington | Form 990 | $3,037,089FY2025 |
| Rising for Justice IncWashington | Form 990 | $2,976,518FY2025 |
| Supreme Court Historical Society the SocietyWashington | Form 990 | $2,909,945FY2025 |
| The Thomas B Fordham FoundationWashington | Form 990 | $2,904,104FY2024 |
| National Taxpayers Union FoundationWashington | Form 990 | $2,896,451FY2024 |
| The Washington Legal Clinic for the Homeless IncWashington | Form 990 | $2,894,962FY2025 |
| Rebuilding Together DC AlexandriaWashington | Form 990 | $2,851,930FY2025 |
| Douglass Community Land TrustWashington | Form 990 | $2,691,805FY2024 |
| National Law Center on Homelessness and PovertyWashington | Form 990 | $2,645,068FY2024 |
| National Family Caregivers AssocWashington | Form 990 | $2,607,981FY2025 |
| Judge David L Bazelon Center for Mental Health LawWashington | Form 990 | $2,600,333FY2025 |
| Ellington FundWashington | Form 990 | $2,577,104FY2025 |
| Association of Catholic Colleges and UniversitiesWashington | Form 990 | $2,557,617FY2025 |
| The Association for the Study of African American Life and HistoryWashington | Form 990 | $2,555,603FY2024 |
| Franklin Center for Global Policy ExchangeWashington | Form 990 | $2,516,407FY2024 |
| Regional Addicition Prevention IncWashington | Form 990 | $2,473,676FY2023 |
| Public Access Corporation of the District of ColumbiaWashington | Form 990 | $2,427,760FY2025 |
| Tholos FoundationWashington | Form 990 | $2,375,082FY2024 |
| Alliance for Continuing Medical Education IncWashington | Form 990 | $2,320,699FY2024 |
| Council on Education for Public HealthWashington | Form 990 | $2,289,491FY2024 |
| Environmental and Energy Study InstituteWashington | Form 990 | $2,265,178FY2024 |
| Friends of Kyoto University North America BranchWashington | Form 990 | $2,260,656FY2024 |
| Historical Society of Washington DCWashington | Form 990 | $2,251,730FY2025 |
| American Humanist AssociationWashington | Form 990 | $2,251,578FY2024 |