Find Nonprofits and Charities
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- Opportunity House, Inc.
- Opportunity International
- Opportunity Junction
- Opportunity Neighborhood
- OPR Coastal Primate Sanctuary
- Optimal Medical Foundation Inc
- OPTIMAL RHYTHMS INC
- Option Institute and Fellowship
- Options Counseling and Family Services
- Opus 118 Harlem School of Music
- Opus Bono Sacerdotii
- ORAM Organization for Refuge Asylum & Migration
- Orang Utan Republik Foundation Inc
- Orange County Cavy Haven
- Orange County Community Housing Corp.
- Orange County Foster Care Aux Chapter 56 Of Cal State Foster P A
- Orange County Rape Crisis Center
- Orange County Society for the Prevention of Cruelty to Animals
- Orange County Turkish American Association (OCTAA)
- Orange County Womens Chorus
- Orange Out Foundation
- Orangutan Foundation International
- Orangutan Outreach Inc
- Orc Industries Inc
- Orca Network
- ORCD Afghanistan
- Orchard Place
- Orchard School
- Order of Ronin MC
- Ordway Center for The Performing Arts
- Oregon Center for Public Policy
- Oregon Environmental Council
- Oregon Friends of Shelter Animals
- Oregon Gymnastics Academy
- Oregon Humane Society
- Oregon Jewish Museum Inc
- Oregon Outback Humane Society
- Oregon Rural Action Inc
- Organic Soup Kitchen
- Organization
- Organization For Autism Research Inc
- Organization for Bat Conservation
- Organization for Youth Empowerment
- Orinda Community Foundation Inc
- Orlando Film Festival, Inc.
- Orlando Union Rescue Mission Inc.
- Orphan Acres Inc.
- Orphan Angels
- Orphan Animal Rescue and Sanctuary, Inc.
- Orphan World Relief
- Orphan's Lifeline of Hope International
- Orphaned Wildlife Center Inc
- Orphanos
- ORPHANS AFRICA
- Orphans Heroes
- Orphans Tree Inc
- Orphans' Future Foundation
- Ort America Inc
- Osa Conservation
- Oscar Litwak Foundation
- Oshkosh Area Humane Society Inc
- Osprey Village, Inc.
- Ostego Bay Foundation Inc
- Other Options, Inc.
- Others First Inc
- Ouachita Calhoun Counties Literacy Council
- Ouaganet, Inc.
- Our Childrens House Inc
- Our City Forest
- Our Companions Domestic Animal Sanctuary Inc
- Our English Setter Rescue
- Our Family Coalition
- Our Family In Africa
- Our Family Orphan Communities, Inc.
- OUR HEARTS TO YOUR SOLES
- Our Home Transitional
- Our House, Inc.
- Our Lady's Inn
- Our Military Kids Inc
- Our Mims Retirement Haven, Inc.
- OurJewishCommunity.org
- Out Of The Woodworks Productions
- Out on a Limb Dance Company & School
- Out Youth Austin
- Outdoor Discovery Center - Macatawa Greenway
- Outer Banks Dare Challenge
- Outfest
- OUTMemphis: The LGBTQ Center for the Mid-South
- Outreach For Animals Inc
- Outreach Inc
- Outreach Inc
- Outreach International
- Outreach Resource Center
- Outreach Teen & Family Services
- Outright Vermont
- Oval Community Youth Program Inc
- Ovarian Awareness of Kentucky
- Ovarian Cancer Connection
- Ovarian Cancer National Alliance
- Ovarian Cancer Research Fund, Inc.
