| T & T Tutor World IncUpper Marlboro | Form 990 | $5,430,801FY2025 |
| Ray of Hope IncCumberland | Form 990 | $5,404,337FY2025 |
| Jude House IncBel Alton | Form 990 | $5,316,309FY2025 |
| Habitat for Humanity International IncBel Air | Form 990 | $5,313,096FY2025 |
| Biophysical SocietyBethesda | Form 990 | $5,267,792FY2024 |
| Living Classrooms FoundationBaltimore | Group return | $5,262,207FY2024 |
| Southern Maryland Tri-County Community Action Committee IncHughesville | Form 990 | $5,109,048FY2025 |
| Moveable Feast IncBaltimore | Form 990 | $5,086,781FY2024 |
| Hillel the Foundation for Jewish Campus LifeCollege Park | Form 990 | $4,922,521FY2025 |
| San Mar Childrens Home IncBoonsboro | Form 990 | $4,915,998FY2025 |
| Naaso the Obesity Society IncRockville | Form 990 | $4,880,101FY2024 |
| Bel Air Volunteer Fire Company IncBel Air | Form 990 | $4,851,783FY2025 |
| Maryland Crime Victims Resource Center IncUpper Marlboro | Form 990 | $4,826,373FY2025 |
| Hospice of the Chesapeake Foundation IncPasadena | Form 990 | $4,658,646FY2024 |
| William M Singerly STEAM FireElkton | Form 990 | $4,627,517FY2025 |
| The Trustees of the Ladew Topiary Gardens IncMonkton | Form 990 | $4,613,408FY2025 |
| National Association of the DeafSilver Spring | Form 990 | $4,592,698FY2025 |
| Olney Boys and Girls Community Sports Association IncOlney | Form 990 | $4,468,490FY2025 |
| St Francis Neighborhood Center CorporationBaltimore | Form 990 | $4,399,409FY2024 |
| Maryland Network Against Domestic Violence IncAnnapolis | Form 990 | $4,191,963FY2025 |
| Young Womens Christian Assoc of Annapolis & Anne Arundel Cty MDArnold | Form 990 | $4,170,918FY2025 |
| National Caregiving FoundationDunkirk | Form 990 | $4,149,225FY2025 |
| Washington County Commission on Aging IncHagerstown | Form 990 | $4,105,432FY2025 |
| The Shepherds Table IncSilver Spring | Form 990 | $4,002,364FY2025 |
| The Community Foundation of Howard County IncColumbia | Form 990 | $3,964,530FY2024 |
| Afro Charities IncBaltimore | Form 990 | $3,950,136FY2025 |
| American Occupational Therapy Foundation IncRockville | Form 990 | $3,938,995FY2025 |
| Potomac Soccer Association IncGermantown | Form 990 | $3,899,973FY2025 |
| Boys and Girls Club of Harford County Maryland IncAberdeen | Form 990 | $3,855,688FY2025 |
| Ignatian Lay Volunteer CorpsBaltimore | Form 990 | $3,705,888FY2025 |
| American Assoc on Intellectual and Developmental DisabilitiesSilver Spring | Form 990 | $3,618,506FY2025 |
| Inwood House Development CorporationSilver Spring | Form 990 | $3,557,862FY2025 |
| Baltimore Healthy Start IncBaltimore | Form 990 | $3,522,131FY2025 |
| Phoenix International IncorporatedWhite Plains | Form 990 | $3,488,402FY2025 |
| National Foundation for Infectious DiseasesBethesda | Form 990 | $3,307,801FY2025 |
| Marian Assisted Living IncRockville | Form 990 | $3,301,944FY2024 |
| Harford Family House IncAberdeen | Form 990 | $3,278,958FY2025 |
| Cedar Lane Senior Living Community I IncLeonardtown | Form 990 | $3,262,088FY2025 |
| Annapolis Maritime Museum IncAnnapolis | Form 990 | $3,239,837FY2024 |
| Chadd Inc Children & Adults with Attention-Deficit Hyperactivity DiLanham | Form 990 | $3,227,192FY2025 |
| Aplastic Anemia & MDS International Foundation IncRockville | Form 990 | $3,170,442FY2025 |
| Acta Materialia IncorporatedBethesda | Form 990 | $3,098,556FY2025 |
| Pride Center of Maryland IncBaltimore | Form 990 | $3,018,103FY2025 |
| Sexual Assault Spouse Resource Center IncBel Air | Form 990 | $2,969,448FY2025 |
| Frederick Community College Foundation IncFrederick | Form 990 | $2,910,584FY2025 |
| Capital Region Minority Supplier Development Council IncSilver Spring | Form 990 | $2,828,516FY2024 |
| Bartholomew House IncRockville | Form 990 | $2,820,023FY2024 |
| The Council on Undergraduate ResearchGaithersburg | Form 990 | $2,806,206FY2025 |
| Byron House IncRockville | Form 990 | $2,748,503FY2024 |
| Mid Shore Council on Family Violence IncEaston | Form 990 | $2,746,701FY2025 |