| Oconto Golf Club | Oconto | Wisconsin |  United States of America | inactive |
| Ocotillo Golf Resort | Chandler | Arizona | United States of America | inactive |
| Ocotillo Park Golf Course | Hobbs | New Mexico | United States of America | inactive |
| Octville Golf & Country Club | Johor Bahru | Johor |  Malaysia | inactive |
| Odakyu Fujisawa Golf Club | Ayase | Kanagawa |  Japan | inactive |
| Odakyu Nishifuji Golf Club | Fujinomiya | Shizuoka | Japan | inactive |
| Odana Hills Golf Course | Madison | Wisconsin | United States of America | inactive |
| Odawara Golf Club - Matsuda Course | Ashigarakami | Kanagawa | Japan | inactive |
| Odawara Golf Club - Nichido-Gotemba Course | Gotemba | Shizuoka | Japan | inactive |
| Odawara Yumoto Country Club | Ashigarashimo | Kanagawa | Japan | inactive |
| Odawarajo Country Club | Odawara | Kanagawa | Japan | inactive |
| Odda Golfklubb | Odda | Hordaland |  Norway | inactive |
| Odder Golfklub | Odder | Midtjylland |  Denmark | inactive |
| Oddur Golf Course | Gardabaer | Capital |  Iceland | inactive |
| Oddur Golf Course | Gardabaer | Capital | Iceland | Active |
| Odense Eventyr Golf Klub | Odense | Syddanmark | Denmark | inactive |
| Odense Golfklub | Odense | Syddanmark | Denmark | inactive |
| Odessa Country Club | Odessa | Texas | United States of America | inactive |
| Odessa Golf Club & RV Park | Odessa | Washington | United States of America | inactive |
| Odsherred Golfklub | Højby Sjælland | Sjælland | Denmark | inactive |
| Odyssey Golf Course | Tinley Park | Illinois | United States of America | inactive |
| Oefen | Vlaardingen | Zuid-Holland |  Netherlands | inactive |
| Oefenbaan | Gasselternijveen | Drenthe | Netherlands | inactive |
| Oegstgeester Golfclub | Oegstgeest | Zuid-Holland | Netherlands | inactive |
| Oeiras Golf | Oeiras | Lisboa e Setúbal |  Portugal | inactive |
| Oeste Ranch Golf Course | Weatherford | Texas | United States of America | inactive |
| Offentlicher | Bosdorf | Schleswig-Holstein |  Germany | inactive |
| Offentlicher | Pilsach | Bavaria | Germany | inactive |
| Oga Golf Club | Oga | Akita | Japan | inactive |
| OGA Golf Course | Woodburn | Oregon | United States of America | inactive |
| Ogaki Country Club | Ibi | Gifu | Japan | inactive |
| Ogasa | Omaezaki | Shizuoka | Japan | inactive |
| Ogasa (Young Bamboo) | Omaezaki | Shizuoka | Japan | inactive |
| Ogawa Country Club | Hiki | Saitama | Japan | inactive |
| Ogbourne Downs Golf Club | Johannesburg | Wiltshire |  England | inactive |
| Ogden Golf & Country Club | Ogden | Utah | United States of America | inactive |
| Ogeechee Valley Country Club | Louisville | Georgia | United States of America | inactive |
| Oglebay Resort | Wheeling | West Virginia | United States of America | inactive |
| Ogna Golfklubb | Sirevåg | Rogaland | Norway | inactive |
| Ogori Country Club | Ogori | Fukuoka | Japan | inactive |
| Ogose Golf Club | Hiki | Saitama | Japan | inactive |
| Ogura Country Club | Shimomike | Wakayama | Japan | inactive |
| Oh-Hatano Country Club | Hadano | Kanagawa | Japan | inactive |
| Ohara Onjuku Golf Club | Isumi | Chiba | Japan | Active |
| Ohariu Valley Golf Club | Wellington | Wellington |  New Zealand | inactive |
| Ohgane Golf Club | Nasu | Tochigi | Japan | inactive |
| Ohhara | Mino | Hyogo | Japan | inactive |
| Ohinata Country Club | Sakura | Tochigi | Japan | inactive |
| Ohio County Community Golf Course | Hartford | Kentucky | United States of America | inactive |
| Ohio Prestwick Country Club | Uniontown | Ohio | United States of America | inactive |