| Mid Maryland Officials Association IncFallston | Form 990 | $686,230FY2025 |
| Maryland Gymnastics IncMillersville | Form 990 | $674,541FY2025 |
| Western Howard County Youth Baseball/Softball League IncColumbia | Form 990 | $661,329FY2026 |
| Calvert Soccer Association IncPrince Frederick | Form 990 | $649,306FY2024 |
| Christian Athletic Association IncCatonsville | Form 990 | $633,244FY2024 |
| Southern Maryland Athletic AllianceLa Plata | Form 990 | $627,497FY2025 |
| Maryland Legends IncRising Sun | Form 990 | $616,965FY2024 |
| Frederick Volleyball Club Juniors IncFrederick | Form 990 | $610,270FY2024 |
| Severna Park Swimming Association IncSeverna Park | Form 990 | $609,697FY2026 |
| Prince Georges County Parks and Recreation FoundationLargo | Form 990 | $605,463FY2025 |
| Fort Ritchie Community Center CorporationCascade | Form 990 | $604,462FY2024 |
| Maryland Volleyball Program IncPotomac | Form 990 | $584,616FY2025 |
| Cockeysville Recreation and Parks CouncilCockeysville | Form 990 | $582,842FY2024 |
| Frederick Youth Hockey AssociationFrederick | Form 990 | $580,809FY2025 |
| Baltimore Lacrosse Club IncTowson | Form 990 | $578,391FY2024 |
| Girls on the Run of Central Maryland IncColumbia | Form 990 | $571,092FY2025 |
| Bay Area Volleyball of MD IncAnnapolis | Form 990 | $557,249FY2025 |
| Maryland Recreation & ParksBowie | Form 990 | $556,083FY2024 |
| Football Club of Bowie LtdAnnapolis | Form 990 | $552,564FY2025 |
| Gambrills-Odenton Recreation Council IncorporatedOdenton | Form 990 | $552,504FY2024 |
| Open Door Sports IncKensington | Form 990 | $551,550FY2025 |
| Friends of the Gunpowder Falls State Park Graham AreaGlen Arm | Form 990 | $548,931FY2024 |
| Cecil County Fair IncChilds | Form 990 | $548,316FY2024 |
| Soccer Association of Western Howard County LtdWoodbine | Form 990 | $546,078FY2024 |
| Bethesda Community Base Ball ClubBethesda | Form 990 | $541,891FY2024 |
| Road Runners Club of AmericaAnnapolis | Form 990 | $541,677FY2025 |
| Montgomery Boat Club IncPotomac | Form 990 | $535,094FY2025 |
| Damascus Sports Association IncDamascus | Form 990 | $532,755FY2025 |
| Bowie Hockey Club IncBowie | Form 990 | $519,527FY2026 |
| Sherwood Forest Club Boys and Girls Summer Camp IncSherwood Forest | Form 990 | $519,012FY2025 |
| Baltimore Operation Sail LtdBaltimore | Form 990 | $517,333FY2024 |
| Girls on the Run of the Greater ChesapeakeAnnapolis | Form 990 | $515,106FY2025 |
| Camp Attaway IncColumbia | Form 990 | $513,428FY2025 |
| Mountain Road SoccerPasadena | Form 990 | $492,444FY2025 |
| Lions Camp Merrick IncNanjemoy | Form 990 | $491,760FY2024 |
| Free Bikes 4 Kidz Maryland IncColumbia | Form 990 | $481,826FY2026 |
| Havre de Grace Recreation Committee IncHavre de Grace | Form 990 | $475,777FY2025 |
| United States Bowling Congress IncLargo | Form 990 | $460,693FY2025 |
| In the Dirt BaseballIjamsville | Form 990 | $457,912FY2024 |
| Calvert Aquatics Club IncPrince Frederick | Form 990 | $451,070FY2025 |
| Reclaiming Our Children & Community Project IncBaltimore | Form 990 | $447,908FY2024 |
| Maryland Fusion Soccer IncPotomac | Form 990 | $445,283FY2025 |
| Hills Angels Gymnastic Team IncorporatedGaithersburg | Form 990 | $441,504FY2025 |
| Calvert County Fair IncBarstow | Form 990 | $430,045FY2025 |
| Frederick Area Swim Team IncFrederick | Form 990 | $428,562FY2025 |
| Columbia Figure Skating Club IncColumbia | Form 990 | $410,131FY2025 |
| B-CC Crew Boosters IncChevy Chase | Form 990 | $395,467FY2025 |
| Baltimore County Sailing Center IncorporatedEssex | Form 990 | $388,612FY2024 |
| Potomac Valley Amateur Hockey Association IncTowson | Form 990 | $384,291FY2025 |
| Eastern Shore Hockey Association IncEaston | Form 990 | $382,377FY2025 |