| Association of Notre Dame Clubs IncWashington | Form 990-EZ | $106,803FY2025 |
| Romark CorporationWashington | Form 990-EZ | $106,692FY2025 |
| Southwest Neighborhood Assembly IncWashington | Form 990-EZ | $106,304FY2024 |
| Coalition for Civil Freedoms FoundationWashington | Form 990-EZ | $106,233FY2025 |
| National Society of the Sons of the American RevolutionWashington | Form 990 | $104,977FY2023 |
| National Society of Arts and LettersWashington | Form 990-EZ | $103,164FY2025 |
| Malta Conferences FoundationWashington | Form 990-EZ | $102,215FY2025 |
| International Association of Homes and Services for the AgingWashington | Form 990-EZ | $101,462FY2024 |
| Westside Club of Georgetown IncWashington | Form 990-EZ | $99,390FY2024 |
| Play Footy IncWashington | Form 990-EZ | $99,335FY2025 |
| New York Avenue Educational FoundationWashington | Form 990-EZ | $99,053FY2025 |
| National Italian American Bar AssociationWashington | Form 990-EZ | $97,057FY2025 |
| American Inns of Court FoundationWashington | Form 990-EZ | $92,873FY2025 |
| The Ivy FoundationWashington | Form 990 | $89,977FY2025 |
| The National Economists ClubWashington | Form 990-EZ | $84,277FY2024 |
| American Association of Jewish Lawyers and JuristsWashington | Form 990-EZ | $83,844FY2025 |
| Lifeline PartnershipWashington | Form 990 | $79,549FY2024 |
| Friends of GuatemalaWashington | Form 990-EZ | $77,979FY2025 |
| American Sokol Organization and Educational and Physical Culture OWashington | Form 990-EZ | $77,637FY2025 |
| Community Housing for the Hearing Impaired IncWashington | Form 990-EZ | $77,494FY2025 |
| Off My BlockWashington | Form 990-EZ | $75,000FY2024 |
| Les Dames D Escoffier of Washington DCWashington | Form 990-EZ | $73,958FY2025 |
| Dupont Circle Citizens AssociationWashington | Form 990-EZ | $71,516FY2025 |
| Association of Literary ScholarsWashington | Form 990-EZ | $69,386FY2024 |
| Development Fund for Black Students in Science and TechnologyWashington | Form 990 | $66,369FY2024 |
| Chinese Community Benevolent AllianceWashington | Form 990-EZ | $65,277FY2024 |
| Arthur C Clarke Foundation of the United States IncWashington | Form 990-EZ | $64,961FY2024 |
| Child Evangelism Fellowship IncWashington | Form 990-EZ | $62,638FY2024 |
| Student National Medical Association IncWashington | Form 990-EZ | $62,176FY2025 |
| Cornell Club of Washington IncWashington | Form 990-EZ | $59,540FY2025 |
| National Church Growth Research Center IncWashington | Form 990-EZ | $58,290FY2024 |
| Friends of the Art Museum of the AmericasWashington | Form 990-EZ | $58,165FY2025 |
| Citizens Commission on Human RightsWashington | Form 990-EZ | $54,043FY2024 |
| Educational Assessment AssociatesWashington | Form 990-EZ | $53,856FY2025 |
| Henry J Reilly Memorial Library and Scholarship FundWashington | Form 990 | $53,155FY2024 |
| E C Hallbeck Memorial Scholarship FundWashington | Form 990 | $52,775FY2025 |
| South Carolina State University National Alumni AssociationWashington | Form 990-EZ | $52,205FY2024 |
| American Friends of Waterford KamhlabaWashington | Form 990-EZ | $50,488FY2024 |
| Government Finance Officers Assoc of the Washington Metrop AreaWashington | Form 990-N | No figure |
| Environmental Federation of CaliforniaWashington | Form 990-N | No figure |
| National Capital Velo Club IncWashington | Form 990-N | No figure |
| Press WatchWashington | Form 990-N | No figure |
| The Economic Strategy InstituteWashington | Form 990-N | No figure |
| Princeton University Club of Washington DCWashington | Form 990-N | No figure |
| D C Blues Society IncWashington | Form 990-N | No figure |
| Florida A & M University National Alumni Association IncWashington | Form 990-N | No figure |
| Colonial Dames of AmericaWashington | Form 990 | $33,358FY2025 |
| Upper Northwest Washington Meals on Wheels IncWashington | Form 990-N | No figure |
| Aspa EndowmentWashington | Form 990 | $32,532FY2024 |
| Foggy Bottom AssociationWashington | Form 990-N | No figure |