Nonprofit organizations
- 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.
- 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.
- 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.
- or1.org.il
Or Movement
Israeli movement for settling in the Negev and the Galilee.
- oraclecancertrust.org
Oracle Cancer Trust
Organization.
- orakeimarina.co.nz
Orakei Marina Management Trust
Charity from New Zealand.
- oranaonline.com.au
Orana Australia Limited
Nonprofit organisation from Australia.
- olalc.com.au
Orange Local Aboriginal Land Council
Australian charity.
- orangesky.org.nz
Orange Sky New Zealand Limited
Charity from New Zealand.
- oranjefonds.nl
Oranje Fonds
Organization.
- orchestrawellington.co.nz
Orchestra Wellington
Professional orchestra in Wellington, New Zealand.
- orchid-cancer.org.uk
Orchid
Nonprofit organization in London, United Kingdom.
- orderofstgeorge.co.uk
Order of Saint George
First secular chivalric order in the world founded 1326 and international confraternity.
- ordway.org
Ordway Center for the Performing Arts
Performing arts center in Saint Paul, Minnesota, United States.
- orebrostadsmission.se
Örebro City Mission
Swedish nonprofit organisation.
- oregonhumane.org
Oregon Humane
American nonprofit organization.
- orewasurfclub.org.nz
Orewa Surf Life Saving Club Incorporated
Charity from New Zealand.
- oni.org.mx
Organismo de Nutricion Infantil
Nonprofit organization from Mexico.
- omdhsc.org
Organizacion Mexicana Para El Desarrollo Humano, Social y Comunitario
Nonprofit organization from Mexico.
- ort.edu.mx
Organizacion Ort de Mexico
Nonprofit organization from Mexico.