| Friends of the Northeast LibraryWashington | Form 990-N | No figure |
| District of Columbia Council of Engineering & Architectl Soc IncWashington | Form 990-N | No figure |
| The Lincoln Group of the District of ColumbiaWashington | Form 990-N | No figure |
| Psi Chi the National Honor Society in PsychologyWashington | Form 990-N | No figure |
| Psi Chi the National Honor Society in PsychologyWashington | Form 990-N | No figure |
| Daughters of the American ColonistsWashington | Form 990-N | No figure |
| Pigskin Club of Washington IncWashington | Form 990-N | No figure |
| Alpha Sigma Phi Alumni Assn Beta Chi Chap Memorial Scholarship FundWashington | Form 990-N | No figure |
| National Air Transportation FoundationWashington | Form 990-N | No figure |
| Memory of African Culture IncWashington | Form 990-N | No figure |
| Jamaica Volunteers AssociationWashington | Form 990-N | No figure |
| Leo Hendricks Ministries IncWashington | Form 990-N | No figure |
| Art Deco Society of Washington IncWashington | Form 990-N | No figure |
| Maryland Health Care Coalition IncWashington | Form 990-N | No figure |
| National Society Daughters of the American ColonistsWashington | Form 990-N | No figure |
| American Associates of Mozarteum BrasileiroWashington | Form 990-N | No figure |
| Kindler Cello Society of Washington IncWashington | Form 990-N | No figure |
| Americans for Democratic Action EducationWashington | Form 990-N | No figure |
| Washington Sculptors GroupWashington | Form 990-N | No figure |
| Ram the Reed-Cooke Neighborhood AssociationWashington | Form 990-N | No figure |
| Cleveland Park Historical SocietyWashington | Form 990-N | No figure |
| The Sanctuary TheatreWashington | Form 990-N | No figure |
| Crossways IncWashington | Form 990-N | No figure |
| The Columbia University Club of Washington DCWashington | Form 990-N | No figure |
| Manchester String Quartet IncWashington | Form 990-N | No figure |
| The Womens Studies EndowmentWashington | Form 990-N | No figure |
| Woodley Park Community AssociationWashington | Form 990-N | No figure |
| Toastmasters InternationalWashington | Form 990-N | No figure |
| Frederick Douglas Memorial and Historical AssociationWashington | Form 990-N | No figure |
| Film Odyssey IncWashington | Form 990-N | No figure |
| The John Cavanaugh FoundationWashington | Form 990-N | No figure |
| Bunny & Crocodile Press IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |
| Spanish Education for WomenWashington | Form 990-N | No figure |
| Sheridan Kalorama Historical Association IncWashington | Form 990-N | No figure |
| National Assoc of Enrolled Agents Educational Foundation IncWashington | Form 990-N | No figure |
| Washington Society of the Archaeological Institute of AmericWashington | Form 990-N | No figure |
| Psi Chi the National Honor Society in PsychologyWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-EZ | $0FY2018 |
| American Psychological Association IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-EZ | $0FY2019 |
| American Psychological Association IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |
| American Psychological Association IncWashington | Form 990-N | No figure |