| Optiven Foundation for Peace and Development USABurtonsville | Form 990-N | No figure |
| Kappa Sigma Delta-Rho Educational FoundationSilver Spring | Form 990-N | No figure |
| Anne Arundel Watermens Association IncShady Side | Form 990-N | No figure |
| Sligo Creek CooperativeSilver Spring | Form 990-N | No figure |
| Morgan State University Alumni Association IncorporatedBaltimore | Form 990-N | No figure |
| Onepuente Foundation IncPotomac | Form 990-N | No figure |
| Morgan State University Alumni Association IncorporatedBaltimore | Form 990-N | No figure |
| Game Plan IncHyattsville | Form 990-N | No figure |
| Parent Booster USA IncBaltimore | Form 990-N | No figure |
| Community Unity IncMillersville | Form 990-N | No figure |
| St Augustine and St Josephs Alumni AssociationFrederick | Form 990-N | No figure |
| International Palaeontological AssociationRockville | Form 990-N | No figure |
| Grenada International Uplift CorporationBeltsville | Form 990-N | No figure |
| Ecological Democracy Institute of North AmericaRiverdale | Form 990-N | No figure |
| American International School of Bucharest Foundation IncBethesda | Form 990-N | No figure |
| T C Tillman Scholarship Fund CorporationNew Carrollton | Form 990-N | No figure |
| Friends of Usu IncRockville | Form 990-N | No figure |
| Friends of Poly WesternOwings Mills | Form 990-N | No figure |
| Organization for Women and Development International IncFrederick | Form 990-N | No figure |
| Centennial Lane Band and Orchestra BoostersEllicott City | Form 990-N | No figure |
| Catonsville Nursery Association IncCatonsville | Form 990-N | No figure |
| PTA Delaware CongressRockville | Form 990-N | No figure |
| Federation of Association of Schools of the Health ProfessionsBethesda | Form 990-N | No figure |
| Baltimore Mineral Society IncBaltimore | Form 990-N | No figure |
| Friends of the Enoch Pratt Free Library IncBaltimore | Form 990-N | No figure |
| The Free Library & Reading Room of BoonsboroBoonsboro | Form 990-N | No figure |
| International Society for Performance ImprovementBowie | Form 990-N | No figure |
| Dufief PTANorth Potomac | Form 990-N | No figure |
| Air Force AssociationAccokeek | Form 990-N | No figure |
| Baltimore Morehouse Alumni Assoc IncBaltimore | Form 990-N | No figure |
| Band Boosters of the Smithsburg Area Schools IncSmithsburg | Form 990-N | No figure |
| Maryland Association for Healthcare Quality IncJarrettsville | Form 990-N | No figure |
| John Brown Historical Foundation IncDarnestown | Form 990-N | No figure |
| Maryland Coalition for Gifted and Talented EducationBaltimore | Form 990-N | No figure |
| PTA Maryland Congress of Parents & Teacher IncMechanicsville | Form 990-N | No figure |
| Association of Chairs of Departments of Physiology IncRockville | Form 990-N | No figure |
| Mount Washington Elementary School Parent Teacher Organization IncBaltimore | Form 990-N | No figure |
| Alpha Chapter Chi Eta Phi Sorority IncUpper Marlboro | Form 990-N | No figure |
| Brunswick Elementary Parent-Teacher Organization Brunswick MarylandBrunswick | Form 990-N | No figure |
| Fort Meade Officers Spouses ClubFort Meade | Form 990-N | No figure |
| PTA Maryland Congress of Parents & Teachers IncGermantown | Form 990-N | No figure |
| Liberty High School Lion Backers IncSykesville | Form 990-EZ | $0FY2025 |
| The Dunbar Alumni Association IncBaltimore | Form 990-N | No figure |
| House of Kefalos IncRockville | Form 990-N | No figure |
| The Former Students and Friends of Robert Moton School IncSykesville | Form 990-N | No figure |
| PTA Delaware CongressRockville | Form 990-EZ | $0FY2025 |
| Westgate Community Association IncBaltimore | Form 990-N | No figure |
| Navy League of the United States Annapolis CouncilAnnapolis | Form 990-N | No figure |
| Allegany County Extension Advisory Council IncOakland | Form 990-N | No figure |
| Maryland Federation of the Council for Exceptional Children IncTowson | Form 990-N | No figure |