Nonprofits in San Diego, California
Nonprofits in San Diego, California. Browse 8,764 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
- Old Town Academy Parent Foundation
EIN 475222952 · Headquarters: San Diego, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Old Town Chamber of Commerce
EIN 956099551 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Older Womens League Owl-the Voice of Midlife and Older Women
EIN 942686349 · Headquarters: SAN DIEGO, CA, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ
- Oligonucleotide Therapeutics Society
EIN 571162250 · Headquarters: SAN DIEGO, CA, USA · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990
- Olive Tree Ministry Inc
EIN 330094784 · Headquarters: SAN DIEGO, CA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990
- Olive Tree Projects
EIN 263577943 · Headquarters: San Diego, CA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oliver Wendell Holmes Elementary PTA
EIN 956207672 · Headquarters: San Diego, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Olivia Hudson Foundation
EIN 463048152 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Olympicos Soccer Club Inc
EIN 330745100 · Headquarters: San Diego, CA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Omega Nu Tau Sorority Inc
EIN 237209150 · Headquarters: San Diego, CA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N
- Omega Psi Phi Franternity
EIN 854343245 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Omega Psi Phi Fraternity
EIN 330545956 · Headquarters: SAN DIEGO, CA, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- Omega Psi Phi Fraternity
EIN 953455347 · Headquarters: SAN DIEGO, CA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Omnipresent Studio Inc
EIN 264018646 · Headquarters: San Diego, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- Omou International
EIN 882494663 · Headquarters: San Diego, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Omunity
EIN 825147842 · Headquarters: SAN DIEGO, CA, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- On Purpose Too
EIN 862830525 · Headquarters: San Diego, CA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oncology and Kids Inc
EIN 844596980 · Headquarters: SAN DIEGO, CA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- One Day Tomorrow Inc
EIN 453267742 · Headquarters: San Diego, CA, US · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- One Digital World
EIN 844851365 · Headquarters: San Diego, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- One Do None Foundation
EIN 901676395 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ
- One Future Gilgit Baltistan
EIN 811054203 · Headquarters: SAN DIEGO, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- One Habitat Foundation
EIN 830680858 · Headquarters: San Diego, CA, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- One Innocent Life Inc
EIN 474671709 · Headquarters: SAN DIEGO, CA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- One Laptop Per Student Inc
EIN 300523250 · Headquarters: San Diego, CA, US · Youth Development · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- One Love Conscious Classrooms
EIN 923288183 · Headquarters: San Diego, CA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- One Love Movement
EIN 473327983 · Headquarters: SAN DIEGO, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- One Message Foundation
EIN 465021367 · Headquarters: SAN DIEGO, CA, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990
- One More Wave Surf Corp
EIN 473300674 · Headquarters: SAN DIEGO, CA, USA · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990
- One Piece Please
EIN 994684125 · Headquarters: san diego, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- One Step Projects
EIN 475517778 · Headquarters: SAN DIEGO, CA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- One Step with You Foundation Inc
EIN 932297024 · Headquarters: San Diego, CA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- One World Childrens Foundation
EIN 830754943 · Headquarters: San Diego, CA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oneworld Education Foundation
EIN 814414572 · Headquarters: San Diego, CA, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Onlife Prevention Organization
EIN 264143944 · Headquarters: san diego, CA, US · Human Services · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- Only with Consent Inc
EIN 464677200 · Headquarters: San Diego, CA, US · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Onword Theatre Llc
EIN 994047243 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- OPA International Astrology Foundation Inc
EIN 881780988 · Headquarters: San Diego, CA, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Open Dreams Organization Inc
EIN 472525191 · Headquarters: SAN DIEGO, CA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990
- Open Field Awakening Inc
EIN 752663820 · Headquarters: San Diego, CA, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Open Mobile Alliance
EIN 812152343 · Headquarters: SAN DIEGO, CA, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990
- Open Mobile Alliance Ltd
EIN 770508309 · Headquarters: SAN DIEGO, CA, USA · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990
- Open Research Institute Inc
EIN 823945232 · Headquarters: SAN DIEGO, CA, USA · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990
- Open Sea Foundation
EIN 330410680 · Headquarters: San Diego, CA, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Open Tv for America Inc
EIN 471952878 · Headquarters: San Diego, CA, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Openoceans Global
EIN 262476179 · Headquarters: SAN DIEGO, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- OpenROAD Initiative Inc
EIN 922108211 · Headquarters: SAN DIEGO, CA, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Openscied
EIN 392270152 · Headquarters: SAN DIEGO, CA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Opera Neo
EIN 463142361 · Headquarters: San Diego, CA, US · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990
- Operation Boomerang Inc
EIN 371730381 · Headquarters: SAN DIEGO, CA, USA · Employment · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ
- Operation Courage Is Beautiful
EIN 474812161 · Headquarters: SAN DIEGO, CA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Operation Encouragement
EIN 953403208 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- Operation First Night
EIN 205131339 · Headquarters: san diego, CA, US · Human Services · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Operation Full Circle
EIN 333155194 · Headquarters: San Diego, CA, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Operation Furlove Animal Rescue
EIN 881221265 · Headquarters: SAN DIEGO, CA, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Operation Good to Go
EIN 823921572 · Headquarters: San Diego, CA, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Operation Healing Fields
EIN 465603410 · Headquarters: San Diego, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Operation Promise
EIN 273601358 · Headquarters: San Diego, CA, US · Public & Societal Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Operation Promise Community Service
EIN 850533309 · Headquarters: SAN DIEGO, CA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Opportunities Across Africa
EIN 464152124 · Headquarters: San Diego, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Opportunity27 Kes Inc
EIN 821258457 · Headquarters: SAN DIEGO, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Opscientia Labs Inc
EIN 873591887 · Headquarters: San Diego, CA, US · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Optimist International
EIN 237014276 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Optimist International
EIN 330395558 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Optimist International
EIN 363989609 · Headquarters: san diego, CA, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Optimist International
EIN 475549557 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Optimist International
EIN 811177616 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Optimist International
EIN 900183833 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Optimist International
EIN 952545568 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Optimist International
EIN 953138291 · Headquarters: San Diego, CA, US · Youth Development · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- Optimist International
EIN 956052047 · Headquarters: San Diego, CA, US · Youth Development · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Optimist International
EIN 956068642 · Headquarters: San Diego, CA, US · Youth Development · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- Optimist International
EIN 956093627 · Headquarters: San Diego, CA, US · Youth Development · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Optimist International
EIN 956209608 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Optimist International of Point Loma The Optimist Club of Point Loma
EIN 956093619 · Headquarters: San Diego, CA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Optimist Youth Band Inc
EIN 952228051 · Headquarters: San Diego, CA, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Optimistic Traveler
EIN 823279855 · Headquarters: SAN DIEGO, CA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ
- Optimistic Visions
EIN 331583969 · Headquarters: San Diego, CA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Options for All Holding Company
EIN 333003337 · Headquarters: SAN DIEGO, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Options for All Inc
EIN 830471805 · Headquarters: SAN DIEGO, CA, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Opus One Chamber Music
EIN 205914611 · Headquarters: San Diego, CA, US · Arts, Culture & Humanities · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Orange Place Townhomes Inc
EIN 330745078 · Headquarters: SAN DIEGO, CA, US · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orange Tree Project Inc
EIN 463246921 · Headquarters: San Diego, CA, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Orange Wave Foundation
EIN 934521122 · Headquarters: San Diego, CA, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Order of St Stanislas Inc
EIN 201324886 · Headquarters: San Diego, CA, US · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Order of the Eastern Star of Calif Prince Hall Rite of Adoption
EIN 237590488 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Order of the Eastern Star of Calif Prince Hall Rite of Adoption
EIN 953315511 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Ordinary Liturgy
EIN 833610635 · Headquarters: San Diego, CA, US · Religion Related · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Organizaciontransgenero2000
EIN 332264609 · Headquarters: San Diego, CA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Organization Development Network of San Diego Inc
EIN 330558272 · Headquarters: San Diego, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Organization for Research on Women And
EIN 631171944 · Headquarters: SAN DIEGO, CA, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2010 · Primary form: IRS Form 990-EZ
- Organized Organics
EIN 464913022 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Organized Play Foundation
EIN 352622735 · Headquarters: San Diego, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Origin Helping Communities Foundation
EIN 813501362 · Headquarters: SAN DIEGO, CA, USA · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ
- Oromo Christian Fellowship
EIN 320262799 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Orphan Kids Inc
EIN 953442138 · Headquarters: San Diego, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Orphan Reach Across Borders Inc
EIN 921551793 · Headquarters: SAN DIEGO, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Orphans & Disabled Children of War
EIN 203615214 · Headquarters: San Diego, CA, US · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Orphans Relief Foundation Inc
EIN 452988309 · Headquarters: San Diego, CA, USA · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Orval and Susie Stewart Foundation
EIN 330171627 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF