| Eastern Trail Management DistrictSaco | Form 990-EZ | $55,354FY2025 |
| York Soccer ClubYork | Form 990-EZ | $54,033FY2025 |
| Messalonskee High School and Middle School All Sports BoostersOakland | Form 990-EZ | $53,408FY2024 |
| Four Seasons Trail AsociationMadawaska | Form 990-EZ | $51,274FY2025 |
| Biddeford Pool Community ClubBiddeford Pool | Form 990 | $51,025FY2025 |
| Winona Camps FoundationPortland | Form 990-EZ | $50,500FY2025 |
| Rumford Polar Bears Snowmobile ClubRumford | Form 990-EZ | $50,064FY2025 |
| Kittery Soccer ClubKittery | Form 990-N | No figure |
| Maine Roller DerbyPortland | Form 990-N | No figure |
| Sanford Red and White FoundationSpringvale | Form 990-EZ | $45,151FY2025 |
| Southern Maine Middle School Athletic ConferenceGorham | Form 990-EZ | $36,962FY2023 |
| Carmel Snowmobile Club IncCarmel | Form 990-N | No figure |
| Greater Waterville Area Youth HockeyWaterville | Form 990-N | No figure |
| Jass BoxingBerwick | Form 990-N | No figure |
| Portland Velo ClubPortland | Form 990-N | No figure |
| Yarmouth Rowing ClubCumberland Foreside | Form 990-N | No figure |
| Clinton Recreation AssociationClinton | Form 990-N | No figure |
| Brewer Boosters Club IncBrewer | Form 990-EZ | $17,125FY2025 |
| Balat SenterWinthrop | Form 990-N | No figure |
| Bethel Outing ClubBethel | Form 990-N | No figure |
| Pinnacle Ski Club of Pittsfield Maine IncPittsfield | Form 990-N | No figure |
| Mountainview Woodies Classic Boat Club of MaineFryeburg | Form 990-N | No figure |
| Fairbanks School Neighborhood Association IncFarmington | Form 990-N | No figure |
| Midcoast RecBelfast | Form 990-N | No figure |
| Acadia Skating AssociationEllsworth | Form 990-N | No figure |
| Saddleback Mountain FoundationCumberland Foreside | Form 990-N | No figure |
| Baker Mountain Ski Tow ClubBingham | Form 990-N | No figure |
| Whitefield Athletic AssociationWhitefield | Form 990-N | No figure |
| Quoggy Joe Ski Club Fort Fairfield RDPresque Isle | Form 990-N | No figure |
| Titcomb Ski Club Educational FoundationFarmington | Form 990-N | No figure |
| Little League Baseball IncSouth Berwick | Form 990-N | No figure |
| Penobscot Valley Ski Club IncBangor | Form 990-N | No figure |
| The United States Pony Clubs IncDover-Foxcroft | Form 990-N | No figure |
| Coastal Maine AquaticsSouth Portland | Form 990-N | No figure |
| The United States Pony Clubs IncTurner | Form 990-N | No figure |
| Maine Tennis Foundation IncPortland | Form 990-N | No figure |
| Portland Middle School HockeyPortland | Form 990-N | No figure |
| Astronomical Society of Northern New EnglandKennebunk | Form 990-N | No figure |
| Mexico Trailblazers Snowmobile ClubMexico | Form 990-N | No figure |
| Mousam Valley Trail RidersShapleigh | Form 990-N | No figure |
| Raiders Booster ClubFryeburg | Form 990-N | No figure |
| Sanford Babe Ruth League IncSanford | Form 990-N | No figure |
| Sacopee Valley Snow DriftersPorter | Form 990-N | No figure |
| Machias Area Little LeagueMachias | Form 990-N | No figure |
| East Blue Hill Village Improvement AssociationBlue Hill | Form 990-N | No figure |
| Tiger Football Committee IncRockland | Form 990-N | No figure |
| Androscoggin Lake Improvement CorpWayne | Form 990-N | No figure |
| Presque Isle Minor Hockey IncPresque Isle | Form 990-N | No figure |
| Palmyra Park Boosters ClubPalmyra | Form 990-N | No figure |
| Maine Golf Hall of Fame IncHarpswell | Form 990-N | No figure |