Nonprofits in Watertown, Massachusetts
Nonprofits in Watertown, Massachusetts. Browse 268 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
- Grrl Haus Cinema Inc
EIN 992449466 · Headquarters: Watertown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Gymnastics More Parents Association Inc
EIN 043385583 · Headquarters: WATERTOWN, MA, USA · Education · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ
- H & K Insurance Charitable Foundation Inc
EIN 273790138 · Headquarters: WATERTOWN, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-PF
- H C I Charitable Foundation Inc
EIN 475063192 · Headquarters: Watertown, MA, US · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Hamazkayin Armenian Educational and Cultural Society Inc
EIN 222553565 · Headquarters: WATERTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Harvard Griffin Gsas Chinese Students and Scholars Association
EIN 851226801 · Headquarters: Watertown, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Hawaiian Tournament Inc
EIN 882346651 · Headquarters: WATERTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Hay Cultural Alliance
EIN 332712050 · Headquarters: Watertown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Headliners in Education Inc
EIN 844017207 · Headquarters: Watertown, MA, US · Education · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Heal Traumas International Inc
EIN 882231121 · Headquarters: Watertown, MA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990
- Hellenic Education & Research Foundation Inc
EIN 611761563 · Headquarters: Watertown, MA, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Helping Families and Children Inc
EIN 043206025 · Headquarters: WATERTOWN, MA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Historical Society of Watertowninc
EIN 046130160 · Headquarters: WATERTOWN, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Home Care Aide Council Inc
EIN 042557551 · Headquarters: WATERTOWN, MA, USA · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990
- Home Care Aide Foundation Inc
EIN 464379388 · Headquarters: WATERTOWN, MA, USA · Health Care · Latest available filing year: 2017 · Primary form: IRS Form 990
- Homenetmen Eastern Region Inc
EIN 042859080 · Headquarters: WATERTOWN, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- Homenetmen Inc
EIN 852608222 · Headquarters: WATERTOWN, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Homenetmen of Boston Inc
EIN 042674841 · Headquarters: Watertown, MA, USA · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- Hope Sparks International Ministries Inc
EIN 832499447 · Headquarters: WATERTOWN, MA, US · Public & Societal Benefit · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Hosmer School Pto
EIN 571179245 · Headquarters: Watertown, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Icatholic Media Inc
EIN 042395520 · Headquarters: WATERTOWN, MA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990
- Impact Imagining Together Platform Arts Culture Conflict Transfrmtn I
EIN 452425532 · Headquarters: WATERTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Institute for Health and Recovery Inc
EIN 043086647 · Headquarters: WATERTOWN, MA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990
- Interhelp Inc
EIN 222570333 · Headquarters: Watertown, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- International Association of Firefighters 1347 IAFF
EIN 046143966 · Headquarters: Watertown, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Iranian Association of Boston Inc
EIN 043031254 · Headquarters: WATERTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Islamic Society for Spiritual Cultivation
EIN 831999624 · Headquarters: WATERTOWN, MA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Italian American Alliance Inc
EIN 842829633 · Headquarters: Watertown, MA, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Italian American Social Club Inc
EIN 042963096 · Headquarters: Watertown, MA, US · Recreation & Sports · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- J R Lowell School Parent Teacher Organization Inc
EIN 272269413 · Headquarters: Watertown, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Jewish Community Day School
EIN 043278141 · Headquarters: Watertown, MA, United States · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- John Milton Society for the Blind C/o Perkins School for the Blind
EIN 135562284 · Headquarters: WATERTOWN, MA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2024 · Primary form: IRS Form 990
- Jurassic Gymnastics Boston Inc
EIN 853633280 · Headquarters: Watertown, MA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Klezmer Conservatory Foundation Inc
EIN 222492172 · Headquarters: Watertown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Knights of Columbus
EIN 237142100 · Headquarters: Watertown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Korean American Biomedical Industry Council
EIN 453701810 · Headquarters: Watertown, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Lady Raiders Co Stephen Russo
EIN 261654979 · Headquarters: Watertown, MA, USA · Recreation & Sports · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ
- League of Women Voters of Massachusetts
EIN 046052453 · Headquarters: Watertown, MA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Lieutenant Paul J Sullivan Charitable Trust
EIN 237122075 · Headquarters: WATERTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Mabikke Educational Foundation Inc
EIN 262355676 · Headquarters: WATERTOWN, MA, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Make Room for Love
EIN 462641085 · Headquarters: Watertown, MA, US · Religion Related · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- March Forward Massachusetts Action
EIN 820664861 · Headquarters: Watertown, MA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- March Forward Massachusetts Educational Fund
EIN 815350208 · Headquarters: Watertown, MA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Marine Corps League Pvt Charles J Shutt Detachment
EIN 237161661 · Headquarters: Watertown, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Marlene F Johnson Memorial Fund for Scholarly Research on Christian Science
EIN 043453095 · Headquarters: WATERTOWN, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Mass Assoc for Parents of the Visually Impaired Inc
EIN 043229630 · Headquarters: Watertown, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ
- Massachusetts Alliance for Economic Development Inc
EIN 043172007 · Headquarters: WATERTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts Baykeeper
EIN 453414361 · Headquarters: WATERTOWN, MA, US · Public & Societal Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- Massachusetts Economic Development Foundation Inc
EIN 043451191 · Headquarters: WATERTOWN, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Massachusetts Gerontology Assn
EIN 222529502 · Headquarters: Watertown, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Master Wardens & Members of Masons in Ma
EIN 041032717 · Headquarters: WATERTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Master Wardens & Members of the Grand Lodge of Masons in Mass
EIN 042606952 · Headquarters: Watertown, MA, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Master Wardens & Members Pequossette Lodge AF & AM
EIN 041032811 · Headquarters: WATERTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Maximumgood Inc
EIN 830374559 · Headquarters: Watertown, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990
- Medford Teacher Equity Scholarship Fund
EIN 862018820 · Headquarters: Watertown, MA, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Media Literacy Now
EIN 462991673 · Headquarters: Watertown, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Mentorarc Inc
EIN 412476611 · Headquarters: WATERTOWN, MA, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Missionary Ministry Christ Lives In
EIN 883266329 · Headquarters: WATERTOWN, MA, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- National Active and Retired Federal Employees Association
EIN 042645614 · Headquarters: Watertown, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- National Cancer Petition Inc
EIN 510195624 · Headquarters: Watertown, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- National Forensic Academy Alumni Association
EIN 453046544 · Headquarters: Watertown, MA, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- National Network of Child Psychiatry Access Programs Inc
EIN 611752881 · Headquarters: WATERTOWN, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Naturestage Inc
EIN 203323110 · Headquarters: Watertown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Network of Engaged International Donors Global Inc
EIN 842081722 · Headquarters: WATERTOWN, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Newbury College Inc
EIN 042452884 · Headquarters: Watertown, MA, USA · Education · Latest available filing year: 2021 · Primary form: IRS Form 990
- Nu 2 U Apparel Inc
EIN 394184401 · Headquarters: Watertown, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Open Door Ensembles of Boston
EIN 933501257 · Headquarters: Watertown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Operation American Soldier Inc
EIN 260857354 · Headquarters: WATERTOWN, MA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Operation250
EIN 823273353 · Headquarters: Watertown, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Our Girl Linda Inc
EIN 832846579 · Headquarters: WATERTOWN, MA, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Outbio
EIN 842891605 · Headquarters: Watertown, MA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Parents Helping Parents - the Roundtable of Support Inc
EIN 042657321 · Headquarters: WATERTOWN, MA, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990
- Patient Science
EIN 881835000 · Headquarters: Watertown, MA, US · Medical Research · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Pediatric AIDS Treatment Support
EIN 270225214 · Headquarters: Watertown, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Performance Advantage Engagement Inc
EIN 932181168 · Headquarters: WATERTOWN, MA, US · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Perkins School for the Blind
EIN 042103616 · Headquarters: Watertown, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Phan Thanh Gian Culture & Education Foundation Inc
EIN 473403863 · Headquarters: Watertown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Planet Boston Inc
EIN 861629181 · Headquarters: WATERTOWN, MA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Pop Warner Little Scholars Inc Watertown Belmont Pop Warner
EIN 043126240 · Headquarters: Watertown, MA, USA · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ
- Popular Romance Project
EIN 461611684 · Headquarters: Watertown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Primary Health Care International Inc
EIN 454210699 · Headquarters: Watertown, MA, US · International, Foreign Affairs & National Security · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Princetonen of Boston Inc
EIN 204581589 · Headquarters: Watertown, MA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- Producers Association of New England Area Theatres Inc
EIN 043129130 · Headquarters: Watertown, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Project Save Armenian Photograph Archives Inc
EIN 222661086 · Headquarters: WATERTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Ptg & Dtd Alumni Association
EIN 452507373 · Headquarters: Watertown, MA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Public Action for Arts and Education
EIN 237408530 · Headquarters: WATERTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ
- Pursuers Worship Network International Inc
EIN 991113137 · Headquarters: Watertown, MA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Raider Gridiron Club Inc
EIN 934303219 · Headquarters: Watertown, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Rim Power Inc
EIN 812637646 · Headquarters: WATERTOWN, MA, US · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Rotary International
EIN 046112411 · Headquarters: WATERTOWN, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Russell Cooperative Preschool Inc
EIN 042552176 · Headquarters: WATERTOWN, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sadoway Labs Foundation Inc
EIN 863021403 · Headquarters: WATERTOWN, MA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Satellife Inc
EIN 223051191 · Headquarters: WATERTOWN, MA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ
- Savoyards of Boston
EIN 832356024 · Headquarters: Watertown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Scientists Against Inhumane Weapons Inc
EIN 833624064 · Headquarters: Watertown, MA, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Screaming Ostrich Inc
EIN 882744486 · Headquarters: Watertown, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Sens Foundation
EIN 452787362 · Headquarters: WATERTOWN, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Serenity Retreat League Inc
EIN 043152764 · Headquarters: Watertown, MA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- Seven Pillars
EIN 261218972 · Headquarters: Watertown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Society of Saint Vincent De Paul in the Archdiocese of Boston
EIN 800665624 · Headquarters: WATERTOWN, MA, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N