Nonprofits in Maine
Nonprofits in Maine. Browse 13,476 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.
Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.
Nonprofit profiles
- Nurturing Tranquility
EIN 821407885 · Headquarters: Limington, ME, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Nuture All Afric Foundation
EIN 861190164 · Headquarters: PORTLAND, ME, USA · International, Foreign Affairs & National Security · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ
- Nye Kennebunk
EIN 822975215 · Headquarters: KENNEBUNK, ME, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Oak Grove Cemetery Association
EIN 010131335 · Headquarters: GARDINER, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oak Grove Cemetery Corporation Rt 9A
EIN 010428569 · Headquarters: Wells, ME, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Oak Grove School
EIN 010211537 · Headquarters: EAST VASSALBORO, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Oak Hill High School Booster Club
EIN 010764725 · Headquarters: SABATTUS, ME, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oak Hill Young Writers Club Inc
EIN 454286078 · Headquarters: VASSALBORO, ME, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Oak Leaf Saving Club
EIN 471048150 · Headquarters: freeport, ME, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Oak Park Housing Preservation Corporation
EIN 223200986 · Headquarters: Lewiston, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oakdale Country Club
EIN 010131390 · Headquarters: MEXICO, ME, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oakes Myrtice Fbo Fir Unitarian Portland Trust Co Llc
EIN 016017002 · Headquarters: PORTLAND, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Oakfield Historical Society
EIN 010418122 · Headquarters: Oakfield, ME, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Oakfield Housing Corporation
EIN 010363316 · Headquarters: Easton, ME, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oakland Area Historical Society
EIN 010340467 · Headquarters: Oakland, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oakland Masonic Association
EIN 300598372 · Headquarters: Oakland, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oars of Hope Inc
EIN 331583357 · Headquarters: Saco, ME, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oasis Club Inc
EIN 222712705 · Headquarters: Saco, ME, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oasis Health Network Inc
EIN 010497587 · Headquarters: BRUNSWICK, ME, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oats
EIN 842944693 · Headquarters: Bangor, ME, US · Mental Health & Crisis Intervention · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Obscura
EIN 300560033 · Headquarters: Orono, ME, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Ocean Avenue Pto
EIN 454983161 · Headquarters: Portland, ME, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Ocean Classroom
EIN 471891061 · Headquarters: Portland, ME, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Ocean Classroom Foundation Inc
EIN 020487209 · Headquarters: DAMARISCOTTA, ME, USA · Education · Latest available filing year: 2012 · Primary form: IRS Form 990
- Ocean Park Association
EIN 010223014 · Headquarters: OCEAN PARK, ME, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- Ocean Park Conservation Society
EIN 237160166 · Headquarters: Ocean Park, ME, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Ocean Point Colony Trust Inc
EIN 237185846 · Headquarters: East Boothbay, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Ocean Research and Education Ltd
EIN 050492187 · Headquarters: North Anson, ME, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Ocean View Cemetery
EIN 016010461 · Headquarters: Wells, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oceanarium and Education Center
EIN 854186927 · Headquarters: BAR HARBOR, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990
- Oceanside Conservation Trust
EIN 010376587 · Headquarters: PORTLAND, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oceanside Improvement Fund Inc
EIN 814477288 · Headquarters: ROCKPORT, ME, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Oceanswide Inc
EIN 341988012 · Headquarters: NEWCASTLE, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oceanus Intitute Inc
EIN 237167473 · Headquarters: Southwest Harbor, ME, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Oceanview Manor Inc
EIN 010317602 · Headquarters: Ocean Park, ME, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oceanview Resident Assistance Fund Inc
EIN 040305393 · Headquarters: Falmouth, ME, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- October Corporation
EIN 010527044 · Headquarters: PORTLAND, ME, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- Odamogan Living Hisory Museum
EIN 205742862 · Headquarters: Litchfield, ME, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Odd Fellows and Rebekahs' Home of Maine
EIN 010216655 · Headquarters: Auburn, ME, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Odd Fellows Hall Association
EIN 010131766 · Headquarters: portland, ME, US · Community Improvement & Capacity Building · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Odd Theater Inc
EIN 922528233 · Headquarters: BUCKFIELD, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Odyssey Sport 97 Ltd
EIN 010516165 · Headquarters: HARRISON, ME, USA · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ
- Office and Professional Employees International Union
EIN 016018980 · Headquarters: Madawaska, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Office and Professional Employees International Union
EIN 016018984 · Headquarters: Baileyville, ME, US · Employment · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Office and Professional Employees International Union
EIN 222512314 · Headquarters: BUCKSPORT, ME, US · Employment · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Ogunquit Arts Collaborative Michael Foley
EIN 043347169 · Headquarters: OGUNQUIT, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990
- Ogunquit Chamber of Commerce
EIN 010348709 · Headquarters: OGUNQUIT, ME, USA · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990
- Ogunquit Fire Company
EIN 010390401 · Headquarters: OGUNQUIT, ME, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Ogunquit Housing Inc
EIN 821005049 · Headquarters: Ogunquit, ME, US · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Ogunquit Memorial Library
EIN 010214019 · Headquarters: OGUNQUIT, ME, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- Ogunquit Playhouse Foundation
EIN 010490316 · Headquarters: OGUNQUIT, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Ogunquit Police Association
EIN 510188941 · Headquarters: Ogunquit, ME, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Oh The Thinks You Can Th INC
EIN 933886400 · Headquarters: Limington, ME, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- OHI
EIN 010362709 · Headquarters: Bangor, ME, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Olas Foundation
EIN 854357815 · Headquarters: Hope, ME, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Old Berwick Historical Society
EIN 010360460 · Headquarters: SOUTH BERWICK, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Old Bristol Historical Society
EIN 300222568 · Headquarters: BRISTOL, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990
- Old Canada Road Historical Society
EIN 470871277 · Headquarters: Bingham, ME, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Old Canada Road Scenic Byway Inc
EIN 311799164 · Headquarters: Bingham, ME, US · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Old Fort Western Fund
EIN 222546922 · Headquarters: AUGUSTA, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Old Hallowell Day Committee
EIN 800318062 · Headquarters: Hallowell, ME, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old Orchard Beach Alumni Association
EIN 463309540 · Headquarters: Old Orchard Beach, ME, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old Orchard Beach Chamber of Commerce
EIN 010212181 · Headquarters: OLD ORCHARD BEACH, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Old Orchard Beach Community Food Pantry Inc
EIN 460647496 · Headquarters: Old Orchard Beach, ME, USA · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Old Orchard Beach Fire Fighters Association
EIN 016044507 · Headquarters: Old Orchard Beach, ME, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old Orchard Beach Firefighters Benevolent Fund
EIN 992186269 · Headquarters: OLD ORCHARD BEACH, ME, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Old Orchard Beach Free Public Lib
EIN 010219828 · Headquarters: Old Orchard Beach, ME, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Old Orchard Beach Historical Society Incorporated
EIN 611691844 · Headquarters: Old Orchard Beach, ME, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old Orchard Beach Vfw Post 7997
EIN 010344591 · Headquarters: OLD ORCHARD BEACH, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Old Orchard Beach Waste Water Employees Assoc
EIN 463200241 · Headquarters: Scarborough, ME, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Old Peoples Riding Club Inc
EIN 061696201 · Headquarters: Dixmont, ME, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old School
EIN 455252831 · Headquarters: Rockland, ME, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old School Me
EIN 842009960 · Headquarters: BELFAST, ME, US · Youth Development · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Old Surry Village Schoolhouse Preservation Group
EIN 812705160 · Headquarters: Surry, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old Town Firemens Relief Association
EIN 016047479 · Headquarters: Old Town, ME, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old Town Little League
EIN 883576486 · Headquarters: Old Town, ME, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old Town Marine Museum
EIN 010540246 · Headquarters: Milford, ME, US · Arts, Culture & Humanities · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- Old Town Museum
EIN 010381906 · Headquarters: Old Town, ME, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old Town Residential Services Corp
EIN 110025004 · Headquarters: OLD TOWN, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Old Town Rotary Charities
EIN 872217303 · Headquarters: Old Town, ME, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Old Town USA Softball
EIN 881751822 · Headquarters: Old Town, ME, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old Town VOA Affordable Housing Inc
EIN 465221620 · Headquarters: Brunswick, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Old Town-orono Fiber Corporation
EIN 474198290 · Headquarters: Orono, ME, US · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Old Town-orono Ymca Foundation
EIN 223160786 · Headquarters: OLD TOWN, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Old Walpole Meeting House
EIN 010530528 · Headquarters: wiscasset, ME, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Old York Historical Society
EIN 222474846 · Headquarters: YORK, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Ole Port Basketball Inc
EIN 933908374 · Headquarters: Portland, ME, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Olive a Coates Charitable Trust
EIN 016149204 · Headquarters: PORTLAND, ME, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Olive Leaf Legacies
EIN 992535569 · Headquarters: Gorham, ME, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oliver Ministries and Counseling and Counseling Association Inc
EIN 208179247 · Headquarters: Old Town, ME, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Olof O Nylander Foundation
EIN 813920072 · Headquarters: Caribou, ME, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Olps-us
EIN 853224844 · Headquarters: BIDDEFORD, ME, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Olympia Snowe Women's Leadership Institute
EIN 461398374 · Headquarters: Portland, ME, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990
- Olympia Sports Foundation
EIN 010539362 · Headquarters: Westbrook, ME, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Omar Cultural Center
EIN 811756304 · Headquarters: PORTLAND, ME, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Omega Wellness Group
EIN 202996363 · Headquarters: BRUNSWICK, ME, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- Omicron Delta Epsilon Intl Honor Society in Economics Inc
EIN 742592905 · Headquarters: Orono, ME, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- On Eagles Wings Inc
EIN 461244632 · Headquarters: Bridgton, ME, US · Youth Development · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- On The Rush of Wings Inc
EIN 273064140 · Headquarters: Friendship, ME, US · Animal Related · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- One Big Sustainable Island
EIN 453599222 · Headquarters: Monmouth, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ