O

Oakland East Bay Symphony - CA
Oakland Zoo - CA
Oasis - A Haven for Women and Children - NJ
Oasis Center - TN
The Oasis Institute - MO
Occidental Arts & Ecology Center - CA
Ocean Alliance - MA
Ocean Conservancy - DC
Ocean Discovery Institute - CA
The Ocean Foundation - DC
Ocean Institute - CA
Ocean Research & Conservation Association - FL
Oceana - DC
ODC Network - MI
Officers' Christian Fellowship - CO
Ohio City Incorporated - OH
Ohio Environmental Council - OH
Ohr Somayach International - NY
Ohr Torah Stone Colleges and Graduate Programs - NY
Oil Change International - DC
Ojai Music Festival - CA
Okizu Foundation - CA
Oklahoma Arts Institute - OK
Oklahoma Baptist Homes for Children - OK
Oklahoma Center for Nonprofits - OK
Oklahoma City Ballet - OK
The Oklahoma City Museum of Art - OK
Oklahoma Contemporary Arts Center - OK
Oklahoma Council of Public Affairs - OK
Oklahoma Heartland Heroes - OK
Oklahoma Humane Society - OK
Oklahoma Institute for Child Advocacy - OK
Oklahoma Medical Research Foundation - OK
Olbrich Botanical Society - WI
Old Dartmouth Historical Society/New Bedford Whaling Museum - MA
Old Dominion Athletic Foundation - VA
Old Globe Theatre - CA
Old Newsboys' Goodfellow Fund of Detroit - MI
OLD SAVANNAH CITY MISSION, INC - GA
Oldways Preservation Trust - MA
Ole Miss Athletics Foundation - MS
Oliver Gospel Mission - SC
Oliver Scholars - NY
Olympia Union Gospel Mission - WA
Omaha Community Playhouse - NE
The Omaha Home for Boys - NE
Omaha Performing Arts - NE
Omaha Symphony - NE
Omaha's Henry Doorly Zoo - NE
On Point - TN
On the Boards - WA
On the Move - CA
On The Rise - MA
On Track Community Development Corporation - MS
On Your Feet - CA
Oncology Nursing Society Foundation - PA
One Acre Fund - IL
One Collective - IL
One Door for Education, Inc. - FL
One Family - MA
One Heart Worldwide - CA
One Heartland - MN
One Israel Fund Ltd. - NY
One Million Degrees - IL
One Safe Place - CA
One Simple Wish - NJ
One Voice - CA
One World Children's Fund - CA
OneAmerica - WA
OneChild - CO
OneFamily Fund - NJ
OneGoal - IL
OneSight - OH
OneSky - CA
OneVoice Movement - NY
OneWorld Health - SC
Open Air Campaigners-USA - PA
Open Arms of Minnesota - MN
Open Books - IL
Open Door Community House, Inc. - GA
Open Door Ministries, Inc. - NC
Open Door Mission, Houston - TX
Open Door Mission, Omaha - NE
Open Doors - CT
Open Doors Kalamazoo - MI
Open Doors USA - CA
Open Hand - GA
Open School - OR
Open Your Heart to the Hungry and Homeless - MN
Openhouse - CA
OPERA America - NY
Opera Colorado - CO
Opera Company of Philadelphia - PA
Opera Grand Rapids - MI
Opera Lafayette - DC
Opera Memphis - TN
Opera Omaha - NE
Opera San José - CA
Opera Theatre of Saint Louis - MO
Operation Access - CA
Operation Blessing International - VA
Operation Bootstrap Africa - MN
Operation Breakthrough - MO
Operation Finally Home - TX
Operation First Response - VA
Operation Food Search - MO
Operation Fuel - CT
Operation Gratitude - CA
Operation Healing Forces - FL
Operation Homefront - TX
Operation HOPE - GA
Operation Kindness - TX
Operation Nightwatch - WA
Operation Second Chance - MD
Operation Shoestring - MS
Operation Support Our Troops-America - IL
Operation USA - CA
Opportunity Fund Community Development - CA
The Opportunity Network - NY
Opportunity, Inc. of Palm Beach County - FL
Optimist International Foundation - MO
Optometry Giving Sight - CO
Oral and Maxillofacial Surgery Foundation - IL
Oral Roberts Evangelistic Association - OK
Orange County Coastkeeper - CA
Orange County Community Foundation - CA
Orange County Museum of Art - CA
Orange County Rescue Mission - CA
Orange County United Way - CA
Orangewood Foundation - CA
Orangutan Foundation International - CA
Orbis International - NY
Orchestra of St. Luke's - NY
Ordway Center for the Performing Arts - MN
Oregon Ballet Theatre - OR
The Oregon Community Foundation - OR
Oregon Energy Fund - OR
Oregon Environmental Council - OR
Oregon Food Bank - OR
Oregon Health & Science University Foundation - OR
Oregon Historical Society - OR
Oregon Humane Society - OR
Oregon Lions Sight & Hearing Foundation - OR
Oregon Museum of Science and Industry - OR
Oregon Natural Desert Association - OR
Oregon Public Broadcasting - OR
Oregon Shakespeare Festival - OR
Oregon Symphony - OR
Oregon Wild - OR
Oregon Zoo Foundation - OR
Organ Donation And Transplant Association Of America - FL
Organic Consumers Association - MN
Organic Farming Research Foundation - CA
Organization for Autism Research - VA
Organization for Tropical Studies - NC
The Orion Society - MA
Orlando Museum of Art - FL
Orlando Philharmonic Orchestra - FL
Orlando Science Center - FL
Orlando Shakespeare Theater - FL
Orlando Union Rescue Mission - FL
Orphan Grain Train - NE
Orphan Helpers - VA
ORPHANetwork - VA
Orphan's Lifeline of Hope International - MT
Orpheus Chamber Orchestra - NY
ORT America - NY
Orthopaedic Research and Education Foundation - IL
Oshkosh Area Community Foundation - WI
Oshkosh Area Humane Society - WI
Oshkosh Area United Way - WI
Osteogenesis Imperfecta Foundation - MD
OUR Center - CO
Our Companions Animal Rescue - CT
Our Daily Bread Ministries - MI
OUR HOUSE Grief Support Center - CA
Our House, Arkansas - AR
Our House, Georgia - GA
Our Kids - TN
Our Lady's Inn - MO
Our Little Haven - MO
Our Military Kids - VA
Our Piece of the Pie - CT
Out & Equal Workplace Advocates - CA
Out Teach - DC
Outdoors for All Foundation - WA
The Outreach Foundation - TN
Outreach International - MO
The Outreach Program - IA
Outreach360 - AZ
OutRight Action International - NY
Ovarian Cancer Research Alliance - NY
Overlook Foundation - NJ
Overtown Youth Center - FL
Oxfam America - MA
Ozarks Food Harvest - MO