| Melrose Youth Football & Cheering IncMelrose | Form 990-EZ | $52,989FY2026 |
| Hopkinton Girls Youth LacrosseHopkinton | Form 990-EZ | $52,962FY2025 |
| Weymouth Street Hockey League IncWeymouth | Form 990-EZ | $52,657FY2025 |
| Fairhaven Road Race IncFairhaven | Form 990-EZ | $52,216FY2025 |
| Watch City Community Boxing and Fitness IncWaltham | Form 990-EZ | $52,206FY2025 |
| Reading Babe Ruth League IncReading | Form 990-EZ | $52,174FY2025 |
| Maynard Nashoba Youth Football & Cheering IncBolton | Form 990-EZ | $51,970FY2025 |
| Rainbow Camp of Massachusetts Inc E Carol K Milne PresidentSouth Weymouth | Form 990-EZ | $51,699FY2024 |
| Wilbraham Friends of Recreation IncWilbraham | Form 990-EZ | $51,589FY2024 |
| Swim Freedom IncCambridge | Form 990-EZ | $51,521FY2026 |
| Friends of CCHS Sports and Activities IncConcord | Form 990-EZ | $51,371FY2024 |
| Camp to BelongLittleton | Form 990-EZ | $50,262FY2023 |
| DBBC Youth Forward IncNorth Easton | Form 990-EZ | $50,001FY2025 |
| Mass Frenzy IncSunderland | Form 990-N | No figure |
| High School Hockey Parents AssociationGreenfield | Form 990-N | No figure |
| PYBWest Newbury | Form 990-N | No figure |
| North Andover Athletic Association IncNorth Andover | Form 990-EZ | $49,674FY2024 |
| Sudbury Girls Softball League IncSudbury | Form 990-N | No figure |
| LGBTQ Boston Gay Basketball League IncBraintree | Form 990-N | No figure |
| Carver Youth Basketball League IncCarver | Form 990-N | No figure |
| Franklin County Youth FootballGreenfield | Form 990-N | No figure |
| Billerica Youth Field Hockey AssociationBillerica | Form 990-N | No figure |
| Lunenburg Youth Baseball & Softball IncLunenburg | Form 990-EZ | $47,892FY2025 |
| Friends of Needham High School Soccer IncNeedham | Form 990-N | No figure |
| Ryal Side Civic Association IncBeverly | Form 990-EZ | $47,509FY2025 |
| Sugarloaf Mountain Athletic Club IncSouth Deerfield | Form 990-N | No figure |
| Framingham Youth Lacrosse ProgramFramingham | Form 990-N | No figure |
| Blackstone Millville Youth Soccer Organization Bmyso IncBlackstone | Form 990-N | No figure |
| Groveland Baseball League IncGroveland | Form 990-EZ | $47,021FY2024 |
| Bernardos Boxing Charitable Foundation IncSwansea | Form 990-N | No figure |
| Chair City Soccer IncGardner | Form 990-N | No figure |
| Boston Slammers Girls Baseball IncRoxbury | Form 990-N | No figure |
| Sutton PLCT Youth Basketball IncSutton | Form 990-N | No figure |
| Dy Youth LacrosseWest Yarmouth | Form 990-N | No figure |
| Cambridge Girls Softball LeagueCambridge | Form 990-N | No figure |
| Josh Thibodeau Helping Hearts FoundationHolden | Form 990-EZ | $45,734FY2024 |
| American Youth Football IncNorwood | Form 990-N | No figure |
| North Middlesex Youth Lacrosse AssociationPepperell | Form 990-N | No figure |
| Wachusett Youth Lacrosse IncPrinceton | Form 990-N | No figure |
| Oakmont Youth Football and Cheer IncWestminster | Form 990-EZ | $45,200FY2025 |
| Mansfield Youth LacrosseMansfield | Form 990-N | No figure |
| Milford Legion Baseball Club IncMilford | Form 990-N | No figure |
| Friends of Lexington High School Wrestling TeamLexington | Form 990-EZ | $44,542FY2025 |
| Friends of Hazelwood ParkNew Bedford | Form 990-N | No figure |
| Eastern Massachusetts Lacrosse Officials Association IncTopsfield | Form 990-N | No figure |
| Amesbury Jr Redhawks Youth Football and Cheering IncAmesbury | Form 990-N | No figure |
| Wareham Youth Soccer Club IncWareham | Form 990-N | No figure |
| Natick Hockey AllianceNatick | Form 990-EZ | $44,171FY2026 |
| Rutland Youth Soccer IncWorcester | Form 990-N | No figure |
| Bay State Trail Riders Association IncSutton | Form 990-N | No figure |