| Ost-Nord | Langenhagen | Lower Saxony |  Germany | inactive |
| Øst-Syd | Silkeborg | Midtjylland |  Denmark | inactive |
| Ost-West | Ahaus | North Rhine-Westphalia | Germany | inactive |
| Ost-West | Langenhagen | Lower Saxony | Germany | inactive |
| Östad Golf | Väderstad | Östergötland |  Sweden | inactive |
| Östad Golfklubb | Väderstad | Östergötland | Sweden | inactive |
| Österåkers Golfklubb | Åkersberga | Stockholm | Sweden | inactive |
| Österled | Åkersberga | Stockholm | Sweden | inactive |
| Österlens Golfklubb | Simrishamn | Skåne | Sweden | inactive |
| Östersund-Frösö Golfklubb | Frösön | Jämtland | Sweden | inactive |
| Østmarka Golfklubb | Ytre Enebakk | Akershus |  Norway | inactive |
| Östra | Nyköping | Södermanland | Sweden | inactive |
| Östra Göinge Golfklubb | Knislinge | Skåne | Sweden | inactive |
| Östra/Norra | Värnamo | Jönköping | Sweden | inactive |
| Østs | Hjørring | Nordjylland | Denmark | inactive |
| Østs-Nord | Hjørring | Nordjylland | Denmark | inactive |
| Ostschweizerischer Golf Club | Niederburen | St. Gallen |  Switzerland | inactive |
| Ostsee Golf Club Wittenbeck | Wittenbeck | Mecklenburg-Vorpommern | Germany | inactive |
| Osugi | Tsuduki | Kyoto |  Japan | inactive |
| Osugi-Daifuku | Tsuduki | Kyoto | Japan | inactive |
| Osuzu | Miyazaki | Miyazaki | Japan | inactive |
| Oswego Country Club | Oswego | New York |  United States of America | inactive |
| Oswego Golf Course | Oswego | Kansas | United States of America | inactive |
| Oswego Lake Country Club | Lake Oswego | Oregon | United States of America | inactive |
| Oswestry Golf Club | Queens Head | Shropshire |  England | inactive |
| Ota Futaba Country Club | Ota | Gunma | Japan | inactive |
| Otagawa Golf Club | Asaminami | Hiroshima | Japan | inactive |
| Otago Golf Club | Dunedin | Otago |  New Zealand | inactive |
| Otaki Country Club | Isumi | Chiba | Japan | inactive |
| Otaki Golf Club | Otaki | Wellington | New Zealand | inactive |
| Otakou Golf Club | Dunedin | Otago | New Zealand | inactive |
| Otani Hiroo Country Club | Sasayama | Hyogo | Japan | inactive |
| Otani Nishiki Country Club | Sasayama | Hyogo | Japan | inactive |
| Otaru Country Club | Otaru | Hokkaido | Japan | inactive |
| Otautau Golf Club | Otautau | Southland | New Zealand | inactive |
| Otematata Golf Club | Otematata | Otago | New Zealand | inactive |
| Otepaa Golf Center | Mäha | Valga |  Estonia | inactive |
| Otepaa Golf Center | Otepaa | Valga | Estonia | Active |
| Othello Golf Club | Othello | Washington | United States of America | inactive |
| Otis Park Golf Course | Bedford | Indiana | United States of America | inactive |
| Otley Golf Club | Otley | West Yorkshire | England | inactive |
| Otome | Sunto | Shizuoka | Japan | inactive |
| Otowa | Agatsuma | Gunma | Japan | inactive |
| Otsego Golf Club | Springfield Center | New York | United States of America | inactive |
| Otsego Golf Club | Gaylord | Michigan | United States of America | inactive |
| Otsu Country Club - East Course | Otsu | Shiga | Japan | inactive |
| Otsu Country Club - West Course | Otsu | Shiga | Japan | inactive |
| Otsuki Garden Club | Tsuru | Yamanashi | Japan | inactive |
| Ottawa Great Life Golf Country Club | Ottawa | Kansas | United States of America | inactive |
| Ottawa Hunt & Golf Club | Ottawa | Ontario |  Canada | inactive |