Nonprofits in Massachusetts
Nonprofits in Massachusetts. Browse 52,168 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
- Oriental Oak Foundation
EIN 870891659 · Headquarters: NEWTON, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Origin Spring Foundation
EIN 852925970 · Headquarters: BELMONT, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Original Gravity Inc
EIN 812819627 · Headquarters: Somerville, MA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Original Steppers of Boston Inc 2016
EIN 815060157 · Headquarters: JAMAICA PLAIN, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Origination Incorporated
EIN 043346266 · Headquarters: JAMAICA PLAIN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oriol Foundation Inc
EIN 822485669 · Headquarters: Holden, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oristaglio Family Foundation
EIN 043541069 · Headquarters: STOCKBRIDGE, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Orkest Inc
EIN 395000060 · Headquarters: Boston, MA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Orleans After School Activities Program Inc
EIN 043163018 · Headquarters: ORLEANS, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orleans Athletic Association Inc
EIN 042666259 · Headquarters: ORLEANS, MA, USA · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990
- Orleans Can
EIN 320396622 · Headquarters: East Orleans, MA, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Orleans Cemetery Association
EIN 042156763 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orleans Chamber Foundation Inc
EIN 461841631 · Headquarters: ORLEANS, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Orleans Chamber of Commerce
EIN 042606857 · Headquarters: Orleans, MA, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orleans Citizens Forum Inc
EIN 043448979 · Headquarters: EAST ORLEANS, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orleans Community Exchange
EIN 471237733 · Headquarters: Orleans, MA, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990
- Orleans Community Partnership Inc
EIN 453258469 · Headquarters: ORLEANS, MA, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Orleans Conservation Trust
EIN 237418072 · Headquarters: ORLEANS, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orleans Eastham Lodge #2572 Bpoe of the USA Inc
EIN 043306725 · Headquarters: EASTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orleans Elementry School Parent Teacher Council
EIN 201237049 · Headquarters: Orleans, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orleans Farmers Market
EIN 010711285 · Headquarters: Orleans, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orleans Firemens Relief Association Inc
EIN 042655865 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Orleans Historical Society Inc
EIN 046168175 · Headquarters: ORLEANS, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990
- Orleans Improvement Association Inc
EIN 311598849 · Headquarters: ORLEANS, MA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Orleans Managers Union
EIN 043569657 · Headquarters: Orleans, MA, USA · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Orleans Police Officers Federation Inc
EIN 042654858 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- Orleans Police Relief Association Incorporated
EIN 510183475 · Headquarters: ORLEANS, MA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Orleans Pond Coalition Inc
EIN 141882175 · Headquarters: ORLEANS, MA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Orleans Rescue Squad Association Inc
EIN 042744118 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Orleans Sweeps and Sculls Inc
EIN 800431083 · Headquarters: Orleans, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orleans Water Alliance
EIN 453021014 · Headquarters: Orleans, MA, US · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Orleans Womans Club
EIN 237090158 · Headquarters: Orleans, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- Orleans Yacht Clubinc
EIN 042102842 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orleshalom
EIN 332799072 · Headquarters: Worcester, MA, US · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Orot Yerushalaim Inc
EIN 261290947 · Headquarters: NEWTON, MA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Orph Inc
EIN 201509802 · Headquarters: NEW BEDFORD, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2010 · Primary form: IRS Form 990-EZ
- Orphan Care Foundation
EIN 934389610 · Headquarters: Boston, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orphan Kitten Rescue League Inc
EIN 921138383 · Headquarters: Ashby, MA, US · Animal Related · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Orphan Therapeutics Accelerator Inc
EIN 993630868 · Headquarters: Andover, MA, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Orpheus Singers Inc
EIN 261136563 · Headquarters: Somerville, MA, US · Arts, Culture & Humanities · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Orr Bulldog Pride Alumni Association
EIN 872816104 · Headquarters: Mattapoisett, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orthodox Canon Law Society of North America Incorp
EIN 931891273 · Headquarters: Brookline, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orthodox Christian Association of Medicine Psycholagy and Religion I
EIN 223003811 · Headquarters: Brookline, MA, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Orthodox Christian Educational Society Inc
EIN 042695241 · Headquarters: West Brookfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Orthodox Christian Fellowship
EIN 710888468 · Headquarters: BROOKLINE, MA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orthodox Fellowship of All Saints of China Incorporated
EIN 205848874 · Headquarters: Arlington, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Orthodox Theological Society in America
EIN 871070822 · Headquarters: Brookline, MA, US · Religion Related · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Orthodox Vocation and Ministry Foundation
EIN 825327707 · Headquarters: BROOKLINE, MA, USA · Religion Related · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- Orthopedic Scientific and Educational Trust
EIN 042767813 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- Osacps Parent Advisory Council
EIN 824390148 · Headquarters: Sturbridge, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Osamequin Farm Inc
EIN 825160103 · Headquarters: Seekonk, MA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oscar Mike Solutions Inc
EIN 872578117 · Headquarters: BURLINGTON, MA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oscar Miller Family Private Foundation
EIN 650460358 · Headquarters: NEWTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Oscar Romero House Inc
EIN 454745438 · Headquarters: NEW BEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oscar Smith Mitchell American Legion Post 140 Inc
EIN 046189453 · Headquarters: Hull, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Osculant Power Project
EIN 862635834 · Headquarters: EASTHAM, MA, US · Public & Societal Benefit · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- OSIA Charitable & Educational Trust
EIN 046190445 · Headquarters: Waltham, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- Osiris Group
EIN 020581418 · Headquarters: ROXBURY, MA, US · Mental Health & Crisis Intervention · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Ospreys Dragon Boat Team
EIN 920790854 · Headquarters: Hanson, MA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Ossa Scientia Incorporated
EIN 053565726 · Headquarters: Holden, MA, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Ossa Scientia Incorporated
EIN 900590678 · Headquarters: Holden, MA, US · Health Care · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Osterville Elementary School Pto
EIN 841656221 · Headquarters: Osterville, MA, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- Osterville Free Library Corporation
EIN 042128454 · Headquarters: OSTERVILLE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Osterville Garden Club Inc
EIN 237119589 · Headquarters: OSTERVILLE, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Osterville Historical Society Inc
EIN 046113382 · Headquarters: OSTERVILLE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Osterville Mens Club
EIN 237059706 · Headquarters: CENTERVILLE, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Osterville Rotary Foundation Inc
EIN 812927119 · Headquarters: OSTERVILLE, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Osterville Veterans Association Inc
EIN 042077326 · Headquarters: OSTERVILLE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Osterville Village Association
EIN 222539843 · Headquarters: OSTERVILLE, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Ostomiesawarenesscom Inc
EIN 474620983 · Headquarters: KINGSTON, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Ostomy Association of Boston Inc
EIN 046112418 · Headquarters: SHARON, MA, US · Human Services · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- Otech Gaa Community Organization Inc
EIN 264329620 · Headquarters: Hyde Park, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Otis Civilian Advisory Council Inc
EIN 042965649 · Headquarters: Falmouth, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Otis Fish & Game Club Inc
EIN 061836143 · Headquarters: Otis Ang Base, MA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Otis Food Pantry Inc
EIN 932713703 · Headquarters: Otis, MA, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Otis Historical Society Inc
EIN 811019107 · Headquarters: OTIS, MA, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Otis Library Inc
EIN 046382917 · Headquarters: OTIS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Otis Model Aero Club Inc
EIN 921427802 · Headquarters: Mashpee, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Otis Observer
EIN 473575404 · Headquarters: OTIS, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Otis Preservation Trust Inc
EIN 842925875 · Headquarters: OTIS, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- Otis Rescue Squad Inc
EIN 510201186 · Headquarters: OTIS, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Otter Brook Foundation C/o Broude & Hochberg Llp
EIN 026116982 · Headquarters: BOSTON, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Otto & Michael Moulton Memorial Fund Inc
EIN 201121454 · Headquarters: DANVERS, MA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Otumfuo Osei-tutu Ii Foundation
EIN 991172132 · Headquarters: Chelmsford, MA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Otus Labs and Initiatives Inc
EIN 931596611 · Headquarters: Cambridge, MA, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Ould Newbury Golf Club Inc
EIN 041696183 · Headquarters: NEWBURYPORT, MA, USA · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990
- Ounavarra Foundation Ltd
EIN 264109030 · Headquarters: MONTEREY, MA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Our Angel Foundation Inc
EIN 834400610 · Headquarters: Charlton City, MA, US · Animal Related · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Our Best Year Ever Project
EIN 823430153 · Headquarters: Methuen, MA, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Our Blue Horizons
EIN 332744620 · Headquarters: East Falmouth, MA, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Our Bright Future Inc
EIN 814077496 · Headquarters: Southbridge, MA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990
- Our Children Our Future Inc
EIN 300437303 · Headquarters: BRAINTREE, MA, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Our Childrens Home International Inc
EIN 844106717 · Headquarters: Plymouth, MA, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Our Community First Action Inc
EIN 993511630 · Headquarters: BEVERLY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Our Community Food Pantry Inc
EIN 900635553 · Headquarters: SOUTHWICK, MA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990
- Our Daily Bread Mansfield Food Pantry Inc
EIN 874457708 · Headquarters: MANSFIELD, MA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990
- Our Daily Bread Soup Kitchen Foundation Inc
EIN 462234342 · Headquarters: TAUNTON, MA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990
- Our Deaf Survivors Center
EIN 043473545 · Headquarters: Worcester, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Our Dogs for Your Dogs
EIN 471869198 · Headquarters: AUBURN, MA, US · Animal Related · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Our Fathers Daily Bread Inc
EIN 203386257 · Headquarters: DENNIS, MA, US · Food, Agriculture & Nutrition · Latest available filing year: 2008 · Primary form: IRS Form 990-N