| Falmouth Track ClubFalmouth | Form 990 | $282,123FY2025 |
| Quincy Youth Soccer LeagueQuincy | Form 990 | $281,993FY2025 |
| Tewksbury Girls Softball IncorporatedTewksbury | Form 990 | $280,964FY2025 |
| Chelmsford Youth Soccer Association IncChelmsford | Form 990 | $279,143FY2025 |
| Adaptive Sports New England IncBoston | Form 990 | $278,611FY2024 |
| South Shore Womens Hockey League IncBoxborough | Form 990 | $276,882FY2025 |
| Little League Baseball IncTaunton | Form 990 | $276,357FY2023 |
| Middleboro Youth Softball LeagueMiddleboro | Form 990 | $274,898FY2024 |
| Mansfield Youth Soccer IncMansfield | Form 990 | $272,130FY2025 |
| Marthas Vineyard Youth Hockey Assoc IncVineyard Haven | Form 990 | $272,041FY2025 |
| Cohasset Sailing Club IncCohasset | Form 990 | $269,960FY2025 |
| Lynn Youth Hockey IncLynn | Form 990 | $264,666FY2025 |
| Minuteman Sparks Youth Hockey Association IncConcord | Form 990 | $264,146FY2025 |
| Massachusetts State Soccer Association IncReading | Form 990 | $262,656FY2024 |
| Woburn Youth Soccer Association IncWoburn | Form 990 | $262,377FY2025 |
| Topsfield Athletic AssociationTopsfield | Form 990 | $260,730FY2024 |
| Whitman Hanson Kingston Youth Hockey Association IncHanson | Form 990 | $259,849FY2025 |
| Hingham Youth Soccer IncHingham | Form 990 | $259,666FY2025 |
| Braintree Junior Soccer League IncBraintree | Form 990 | $259,123FY2026 |
| Arlington-Belmont Crew IncBelmont | Form 990 | $259,089FY2024 |
| Donegal Boston USA IncQuincy | Form 990 | $258,900FY2024 |
| Andover Little League IncAndover | Form 990 | $256,425FY2025 |
| North Andover Youth Hockey AssocNorth Andover | Form 990 | $251,121FY2025 |
| Plymouth Youth Baseball & Softball IncPlymouth | Form 990 | $251,111FY2025 |
| Massachusetts Wrestling Association IncRutland | Form 990 | $249,649FY2025 |
| Duxbury Youth Soccer IncDuxbury | Form 990 | $249,520FY2025 |
| Harvard Athletic Association IncHarvard | Form 990 | $248,944FY2024 |
| Sand Springs Recreation Center IncWilliamstown | Form 990 | $247,524FY2025 |
| Walpole Youth Basketball Association IncWalpole | Form 990 | $246,723FY2025 |
| Bridgewater Youth Soccer Association IncBridgewater | Form 990 | $244,895FY2025 |
| Circus Up IncWatertown | Form 990 | $244,457FY2025 |
| Futures Collegiate Baseball League of New England IncWeymouth | Form 990 | $242,749FY2024 |
| Shrewsbury Youth Soccer Association IncShrewsbury | Form 990 | $241,838FY2025 |
| American Youth Football IncNorth Attleboro | Form 990 | $241,262FY2025 |
| Mass Drifters Junior Olympic SoftballBridgewater | Form 990 | $240,849FY2025 |
| Raynham Youth Baseball & Softball Association IncRaynham | Form 990 | $240,743FY2025 |
| Brookline Baseball IncBrookline | Form 990 | $240,292FY2024 |
| Wakefield Soccer Association IncWakefield | Form 990 | $240,119FY2025 |
| Youth Baseball of Reading IncReading | Form 990 | $240,054FY2025 |
| Arlington Youth Baseball and Softball Association IncArlington | Form 990 | $239,470FY2025 |
| Tewksbury Youth Soccer LeagueTewksbury | Form 990 | $236,819FY2025 |
| Westport FairWestport | Form 990 | $236,606FY2025 |
| Northampton Youth and Community Rowing IncNorthampton | Form 990 | $234,042FY2024 |
| Norfolk Baseball Association IncorporatedNorfolk | Form 990 | $233,181FY2025 |
| Falmouth Baseball Club IncFalmouth | Form 990 | $233,015FY2025 |
| Billerica Hockey AssociationBillerica | Form 990 | $232,753FY2014 |
| Central Mass Youth Soccer LeagueUpton | Form 990 | $232,689FY2025 |
| Milton Youth Football and Cheer IncMilton | Form 990 | $230,232FY2025 |
| Friends of the Park on Elm Street IncMarblehead | Form 990 | $230,189FY2024 |
| Spark Newton Corporation Dba Spark NewtonNewton Center | Form 990 | $229,727FY2025 |