| Academy of Georgian Heritage IncPotomac | Form 990-EZ | $88,828FY2024 |
| Music in Me Foundation InternationalSilver Spring | Form 990-EZ | $88,752FY2025 |
| Life in Yoga Institute IncAshton | Form 990-EZ | $88,706FY2025 |
| Oakdale High School Band BoostersNew Market | Form 990-EZ | $88,547FY2025 |
| Side by Side IncorporatedLaurel | Form 990-EZ | $88,445FY2025 |
| South River High School Sports Booster ClubEdgewater | Form 990-EZ | $87,938FY2024 |
| Washington Association for Korean SchoolsGermantown | Form 990-EZ | $87,826FY2025 |
| Sunderland Elementary Family and School OrganizationSunderland | Form 990-EZ | $86,949FY2025 |
| National Quantum Literacy Network CorporationGlen Burnie | Form 990-EZ | $86,794FY2025 |
| United Association Scholarship TRAnnapolis | Form 990 | $86,082FY2024 |
| Centennial Boosters IncEllicott City | Form 990-EZ | $85,805FY2025 |
| Parent Booster USA IncRockville | Form 990-EZ | $84,570FY2025 |
| Cyber-Green Group IncBowie | Form 990-EZ | $84,399FY2023 |
| Somerset Elementary School Educational Foundation IncBethesda | Form 990-EZ | $84,109FY2025 |
| Walt Whitman All Sports Booster Club IncBethesda | Form 990-EZ | $83,754FY2025 |
| DRUPAL4GOVOdenton | Form 990-EZ | $83,629FY2025 |
| Folger McKinsey Elementary SchoolptoSeverna Park | Form 990-EZ | $83,398FY2025 |
| Literacy Council of Carroll County IncWestminster | Form 990-EZ | $82,886FY2024 |
| Society for Image-Guided NeurointerventionsBaltimore | Form 990-EZ | $82,261FY2025 |
| Hampstead Hill Academy PTOBaltimore | Form 990-EZ | $82,231FY2025 |
| Ncu Educational Development Foundation IncColumbia | Form 990-EZ | $81,980FY2024 |
| Defense Interns CorpHavre de Grace | Form 990-EZ | $80,600FY2024 |
| LGG Uplift Foundation IncClinton | Form 990-EZ | $79,971FY2024 |
| Iqra House IncBaltimore | Form 990-EZ | $79,475FY2025 |
| Helping Our People Empowerment Group IncLaurel | Form 990-EZ | $77,943FY2024 |
| Harford Artists Association IncBel Air | Form 990-EZ | $77,801FY2026 |
| Crofton High Cardinal Club IncCrofton | Form 990-EZ | $77,604FY2026 |
| Nacm Scholarship Foundation IncColumbia | Form 990 | $77,423FY2024 |
| Broadneck Elementary School Parent Teacher OrganizationArnold | Form 990-EZ | $76,356FY2025 |
| STEM Center of Excellence IncOwings Mills | Form 990-EZ | $75,671FY2025 |
| Institute for Dynamic Education Advancement IncTakoma Park | Form 990-EZ | $75,312FY2025 |
| Thomas Johnson High School Band Boosters Club IncFrederick | Form 990-EZ | $75,311FY2025 |
| Chesapeake High School Athletic Boosters AssociationPasadena | Form 990-EZ | $74,854FY2026 |
| The Ghrow Foundation IncColumbia | Form 990-EZ | $74,323FY2025 |
| Each 1 Teach 1 IncFrederick | Form 990-EZ | $73,962FY2025 |
| Garrett Mentors IncOakland | Form 990-EZ | $73,421FY2025 |
| Charm City Referee Association IncDundalk | Form 990-EZ | $72,790FY2024 |
| Cal Ripken Sr Collegiate Baseball League IncLaytonsville | Form 990-EZ | $72,726FY2024 |
| The Minority Scholars Program IncAshton | Form 990-EZ | $72,635FY2024 |
| Hearts of the Herd LimitedFrederick | Form 990-EZ | $72,501FY2025 |
| Maryland Association of School Health Nurses IncColumbia | Form 990-EZ | $72,294FY2025 |
| Oak Hill Elementary School Parent Teacher Organization IncorporatedSeverna Park | Form 990-EZ | $72,142FY2025 |
| Creative Capital Impact OrganizationRockville | Form 990 | $72,128FY2024 |
| C Milton Wright Music Parent OrganizationBel Air | Form 990-EZ | $71,170FY2025 |
| Towson High School Alumni Association IncTowson | Form 990-EZ | $71,157FY2025 |
| Within U IncGreenbelt | Form 990-EZ | $69,902FY2025 |
| National Cyber LeagueChevy Chase | Form 990-EZ | $69,238FY2025 |
| A D Cherry Early Childhood Music Outreach Program IncOdenton | Form 990-EZ | $68,881FY2024 |
| Seneca Valley High School Booster ClubGermantown | Form 990-EZ | $67,970FY2025 |
| BJH Scholarship FundChesapeake City | Form 990-EZ | $67,603FY2025 |