Nonprofit organizations
- amnesty.org
Oficina Regional de Amnistia Internacional
Nonprofit organization from Mexico.
- stichting-ogo.nl
OGO
Nonprofit organisation from the Netherlands.
- operator.edu.pl
Ogólnopolski Operator Oświaty
Nonprofit organisation from Poland.
- orav.org.tr
Öğretmen Akademisi Foundation
Non-profit organisation from Turkey.
- mckinnon.co
Oh-Rule Family Philanthropy
Australian charity.
- transportation.ohio.gov
Ohio Department of Transportation Office of Environmental Services
Office within the Division of Planning of the Ohio Department of Transportation.
- ohomairangi.co.nz
Ohomairangi Trust
Charity from New Zealand.
- oejv.de
Ökologischer Jagdverband
Ecological Hunting Association (Germany).
- hol.kommune.no
Olav S. Aakers Legat
Foundation in Norway.
- opan.com.au
Older Persons Advocacy Network
Nonprofit organisation from Australia.
- onjcri.org.au
Olivia Newton-John Cancer Research Institute
Australian cancer research facility in Melbourne.
- olmeca.edu.mx
Olmec University
University in Villahermosa, Mexico.
- okswim.pl
Olsztyn Sports Club 'Warmia i Mazury'
Nonprofit organisation from Poland.
- bring.no
Oluf Opdahls Stiftelse
Foundation in Norway.
- noc-kosovo.org
Olympic Committee of Kosovo
National Olympic Committee.
- omahaplayhouse.com
Omaha Community Playhouse
Theater in Omaha, Nebraska, United States.
- omakamarae.co.nz
Omaka Marae Incorporated
Charity from New Zealand.
- omf.org
OMF New Zealand
Charity from New Zealand.
- whareawhina.org.nz
One Double Five Whare Awhina Community House Trust
Charity from New Zealand.
- unboutdumonde.org
One End of the World
Nonprofit organization.
- onehopemalawi.com
One Hope Malawi
Nonprofit organisation from the Netherlands.
- oneblood.org
OneBlood
Nonprofit organization in Saint Petersburg, United States.
- onecare.org.au
Onecare Limited
Nonprofit organisation from Australia.
- oneschoolglobal.com
OneSchool Global Australia Ltd
Nonprofit organisation from Australia.
- ontariobeans.on.ca
Ontario Bean Growers
Nonprofit organization in Guelph, Canada.
- oopoeh.nl
OOPOEH
Nonprofit organisation from the Netherlands.
- otwarteklatki.pl
Open Cages Association
Nonprofit organisation from Poland.
- opendoors.org.nz
Open Doors (New Zealand) Incorporated
Charity from New Zealand.
- opendoors.org
Open Doors
Christian evangelistic organization.
- open-doors.se
Open Doors Sverige
Swedish nonprofit organisation.
- open.org.kh
Open Institute
Nonprofit organization in Phnom Penh, Cambodia.
- openlunar.org
Open Lunar Foundation
Non-profit organization committed to enabling peaceful, cooperative lunar settlement.
- openpathwaycollective.org
Open Pathway Collective
Australian non-profit software organisation developing open-source technology to assist displaced and previously displaced people.
- openprivacy.ca
Open Privacy
Non-profit organization.
- opensciencehardware.org
Open Science Hardware Foundation
Global nonprofit organization advancing the design, development, and use of open hardware for scientific research.
- opensource.org
Open Source Initiative
Non-profit organization promoting open-source software.
- opensourcematters.org
Open Source Matters
Nonprofit organization that supports the Joomla project.
- opensourcesanjose.org
Open Source San José
Nonprofit civic technology organization based in San Jose, California, United States.
- open.edu.au
Open Universities Australia
Network of Australian universities offering distance education.
- opendoor.org.au
Opendoor Ltd
Nonprofit organisation from Australia.
- openstreetmap.org.pl
OpenStreetMap Poland
Nonprofit organisation from Poland.
- openstreetmap.us
OpenStreetMap U.S.
American nonprofit organization.
- opepa.org
OpEPA
Non-governmental organization.
- obmx.org
Operacion Bendicion Mexico
Nonprofit organization from Mexico.
- operationmercy.org
Operation Mercy
Swedish nonprofit organisation.
- operationsmile.org.mx
Operation Smile Mexico
Nonprofit organization from Mexico.
- oppepper4all.nl
Oppepper4all
Nonprofit organisation from the Netherlands.
- vzwopstap.be
Opstap
Belgian nonprofit organisation.