| Okayama Mitsu Country Club | Kita | Okayama |  Japan | inactive |
| Okayama Nishi Golf Club | Ibara | Okayama | Japan | inactive |
| Okazaki Country Club | Okazaki | Aichi | Japan | inactive |
| Okeechobee Executive Golf Course | The Villages | Florida |  United States of America | inactive |
| Okeeheelee Golf Course | West Palm Beach | Florida | United States of America | inactive |
| Okeene Golf Club | Okeene | Oklahoma | United States of America | inactive |
| Okefenokee Country Club | Blackshear | Georgia | United States of America | inactive |
| Okehampton Golf Club | Okehampton | Devon |  England | inactive |
| Okemah Golf Course | Okemah | Oklahoma | United States of America | inactive |
| Okemo Valley Golf Club | Ludlow | Vermont | United States of America | inactive |
| Okgwakian Country Club | Gokseong | South Jeolla |  South Korea | inactive |
| Okinawa Country Club | Nakagami | Okinawa | Japan | inactive |
| Okinawa Country Club | Monte Grande | Buenos Aires |  Argentina | inactive |
| Okinawa Kokusai Golf Club | Kunigami | Okinawa | Japan | inactive |
| Okinawa Royal Golf Club | Uruma | Okinawa | Japan | inactive |
| Okkala Golf Resort | Yangon | Yangon |  Myanmar | inactive |
| Oklahoma City Golf & Country Club | Oklahoma City | Oklahoma | United States of America | inactive |
| Öko Golf Neusiedlercsarda | Neusiedl am See | Burgenland |  Austria | inactive |
| Okoboji View Golf Course | Spirit Lake | Iowa | United States of America | inactive |
| Okoroire Golf Club | Okoroire | Waikato |  New Zealand | inactive |
| Okudogo Golf Club | Matsuyama | Ehime | Japan | inactive |
| Okura Country Club | Nishikata | Tochigi | Japan | inactive |
| Okutama | Akiruno | Tokyo | Japan | inactive |
| Okutsu Golf Club | Tomata | Okayama | Japan | inactive |
| Ol' Colony Golf Course | Tuscaloosa | Alabama | United States of America | inactive |
| Olafsfjordur Golf Course | Olafsfjordur | Northeast |  Iceland | inactive |
| Olalla Valley Golf Course | Toledo | Oregon | United States of America | inactive |
| Øland Golfklub | Brovst | Nordjylland |  Denmark | inactive |
| Ölands Golfklubb | Löttorp | Kalmar |  Sweden | inactive |
| Olandsbygdens Golfklubb | Alunda | Uppsala | Sweden | inactive |
| Olathea Golf Course | Le Claire | Iowa | United States of America | inactive |
| Olazabal | Dongguan | Guangdong |  China | inactive |
| Old | New Richmond | Wisconsin | United States of America | inactive |
| Old | Hot Springs | Virginia | United States of America | inactive |
| Old | Hot Springs | Virginia | United States of America | inactive |
| Old | Whitney | Texas | United States of America | inactive |
| Old | Garland | Texas | United States of America | inactive |
| Old | Sarver | Pennsylvania | United States of America | inactive |
| Old | Bethlehem | Pennsylvania | United States of America | inactive |
| Old | Lake Orion | Michigan | United States of America | inactive |
| Old | Indianapolis | Indiana | United States of America | inactive |
| Old | Half Moon Bay | California | United States of America | inactive |
| Old | Mierlo | Noord-Brabant |  Netherlands | inactive |
| Old | Wonju | Gangwon | South Korea | inactive |
| Old | Yongin | Gyeonggi | South Korea | inactive |
| Old | Goyang | Gyeonggi | South Korea | inactive |
| Old | Goyang | Gyeonggi | South Korea | inactive |
| Old | Otawara | Tochigi | Japan | inactive |
| Old | Kells | Meath |  Ireland | inactive |
| Old | Bogor | West Java |  Indonesia | inactive |