| Open.9 Golf Eichenried | Moosinning | Bavaria |  Germany | inactive |
| Openbare Golfbaan Kralingen | Rotterdam | Zuid-Holland |  Netherlands | inactive |
| Openbare Golfclub Dronten | Dronten | Flevoland | Netherlands | inactive |
| Oporto Golf Club | Espinho | Beira Litoral |  Portugal | inactive |
| Opotiki Golf Club | Opotiki | Bay of Plenty |  New Zealand | inactive |
| Oppdal Golfklubb | Oppdal | Sør-Trøndelag |  Norway | inactive |
| Oppegård Golfklubb | Oppegård | Akershus | Norway | inactive |
| Oppenheimer Golf Club | Welkom | Free State |  South Africa | inactive |
| Opunake Golf Course | Opunake | Taranaki | New Zealand | inactive |
| Oquirrh Hills Golf Course | Tooele | Utah |  United States of America | inactive |
| Ora Country Club | Jeju | Jeju |  South Korea | inactive |
| Orange | Savoy | Illinois | United States of America | inactive |
| Orange | Parrish | Florida | United States of America | inactive |
| Orange | Anseong | Gyeonggi | South Korea | inactive |
| Orange | Tomioka | Gunma |  Japan | inactive |
| Orange | Haga | Tochigi | Japan | inactive |
| Orange | Bryanston | Wiltshire |  England | inactive |
| Orange | Lésigny | Ile-de-France |  France | inactive |
| Orange (Executive - Par 3) | Sankt Johann im Pongau | Salzburg |  Austria | inactive |
| Orange 9 | Whitney Point | New York | United States of America | inactive |
| Orange Beach Golf Center | Orange Beach | Alabama | United States of America | inactive |
| Orange Blossom Hills Golf and Country Club | Lady Lake | Florida | United States of America | inactive |
| Orange County National Golf Club | Orlando | Florida | United States of America | inactive |
| Orange Dunes Golf Club | Incheon | Incheon | South Korea | inactive |
| Orange Ex-Services Country Golf Club | Orange | New South Wales |  Australia | inactive |
| Orange Hills Country Club | Orange | Connecticut | United States of America | inactive |
| Orange Lake Resort and Country Club | Kissimmee | Florida | United States of America | inactive |
| Orange Lakes Golf Club | Sheikh Zayed City | Giza |  Egypt | inactive |
| Orange Park Country Club | Orange Park | Florida | United States of America | inactive |
| Orange Shiga Country Club | Koka | Shiga | Japan | inactive |
| Orange Tree Golf Club | Orlando | Florida | United States of America | inactive |
| Orange Tree Golf Club | Scottsdale | Arizona | United States of America | inactive |
| Orangebrook Golf & Country Club | Hollywood | Florida | United States of America | inactive |
| Orangeburg Country Club | Orangeburg | South Carolina | United States of America | inactive |
| Orangedene Golf Club | Orangedene | Limpopo | South Africa | inactive |
| Orangeville Golf & Country Club | Alton | Ontario |  Canada | inactive |
| Oranje | Biddinghuizen | Flevoland | Netherlands | inactive |
| Orapa Golf Club | Orapa | Central |  Botswana | inactive |
| Orara Park Golf Course | Coutts Crossing | New South Wales | Australia | inactive |
| Orascom Touristic Sports | El gouna | Red Sea | Egypt | inactive |
| Orascom Touristic Sports | Al gouna | Red Sea | Egypt | inactive |
| Orbost Golf Club | Orbost | Victoria | Australia | inactive |
| Örbyhus Golfklubb | Örbyhus | Uppsala |  Sweden | inactive |
| Orcas Island (Alternate Tees) | Eastsound | Washington | United States of America | inactive |
| Orcas Island Golf Course | Eastsound | Washington | United States of America | inactive |
| Orchard | Lincoln | California | United States of America | inactive |
| Orchard | Kilsallaghan | Dublin |  Ireland | inactive |
| Orchard | Kilsallaghan | Dublin | Ireland | inactive |
| Orchard | Dartford | Kent | England | inactive |
| Orchard | Fenwick | Ontario | Canada | inactive |