| Blacks in GovernmentWashington | Form 990-N | No figure |
| The International Business Ethics Institute IncWashington | Form 990-N | No figure |
| Phi Beta Kappa SocietyWashington | Form 990-N | No figure |
| National Society Colonial Dames Xvii CenturyWashington | Form 990-N | No figure |
| Phi Beta Kappa SocietyWashington | Form 990-N | No figure |
| Blacks in GovernmentWashington | Form 990-N | No figure |
| Center for the Economic Analysis of Law InstituteWashington | Form 990-N | No figure |
| Blacks in GovernmentWashington | Form 990-N | No figure |
| Blacks in GovernmentWashington | Form 990-N | No figure |
| Psi Chi the National Honor Society in PsychologyWashington | Form 990-N | No figure |
| Penn State Alumni AssociationWashington | Form 990-N | No figure |
| Psi Chi the National Honor Society in PsychologyWashington | Form 990-N | No figure |
| Phi Beta Kappa SocietyWashington | Form 990-N | No figure |
| Phi Beta Kappa SocietyWashington | Form 990-N | No figure |
| Psi Chi the National Honor Society in PsychologyWashington | Form 990-N | No figure |
| Concerns of Police SurvivorsWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |
| Naesco Education FoundationWashington | Form 990-N | No figure |
| La Leche League International IncWashington | Form 990-N | No figure |
| Sons and Daughters of Africa Sada Inc Africanization SocietyWashington | Form 990-N | No figure |
| American Inns of Court FoundationWashington | Form 990-EZ | $0FY2025 |
| Georgetown University Alumni Association IncWashington | Form 990-N | No figure |
| Georgetown University Alumni Association IncWashington | Form 990-N | No figure |
| Georgetown University Alumni Association IncWashington | Form 990-N | No figure |
| Georgetown University Alumni Association IncWashington | Form 990-N | No figure |
| American Rose SocietyWashington | Form 990-N | No figure |
| Washington Fisk Club of the Fisk University Alumni AssociationWashington | Form 990-N | No figure |
| National Society of the Daughters of the American RevolutionWashington | Form 990-N | No figure |
| National Society of the Daughters of the American RevolutionWashington | Form 990-N | No figure |
| Society of Mayflower Descendants in the District of ColumbiaWashington | Form 990-N | No figure |
| Association of the Oldest Inhabitants of the District of ColWashington | Form 990-N | No figure |
| National Society of the Daughters of the American RevolutionWashington | Form 990-N | No figure |
| National Society of the Daughters of the American RevolutionWashington | Form 990-N | No figure |
| National Society of the Daughters of the American RevolutionWashington | Form 990-N | No figure |
| National Society of the Daughters of the American RevolutionWashington | Form 990-N | No figure |
| Daughters of the American ColonistsWashington | Form 990-N | No figure |
| Music Teachers National Association IncWashington | Form 990-N | No figure |
| Society of the War of 1812 in the District of ColumbiaWashington | Form 990-N | No figure |
| Psi Chi the National Honor Society in PsychologyWashington | Form 990-N | No figure |
| Sigma Theta Tau IncWashington | Form 990-N | No figure |
| Sigma Theta Tau IncWashington | Form 990-N | No figure |
| Alpha Phi OmegaWashington | Form 990-N | No figure |
| The Smith College Club of WashingtonWashington | Form 990-N | No figure |
| District of Columbia Dental Society Relief FundWashington | Form 990-N | No figure |
| Washington Print ClubWashington | Form 990-N | No figure |
| Toastmaster InternationalWashington | Form 990-N | No figure |
| Pi Mu Epsilon IncWashington | Form 990-N | No figure |
| Phi Beta Kappa SocietyWashington | Form 990-N | No figure |
| Toastmasters InternationalWashington | Form 990-N | No figure |
| Phi Beta Kappa SocietyWashington | Form 990-N | No figure |