| Orust Golfklubb | Ellös | Västra Götaland |  Sweden | inactive |
| Os Golf Course | Blonduos | Northwest |  Iceland | inactive |
| Osafune Country Club | Setouchi | Okayama |  Japan | inactive |
| Osage Country Club | Linn | Missouri |  United States of America | inactive |
| Osage National Golf Club | Lake Ozark | Missouri | United States of America | inactive |
| Osaka Bay | Izumisano | Osaka | Japan | inactive |
| Osaka Golf Club - Tannowa Course | Sennan | Osaka | Japan | inactive |
| Osaka Public Golf Course | Osaka | Osaka | Japan | inactive |
| Osakis Country Club | Osakis | Minnesota | United States of America | inactive |
| Osato Golf Club | Kurokawa | Miyagi | Japan | inactive |
| Osawatomie Golf Course | Osawatomie | Kansas | United States of America | inactive |
| Osborne Golf Club | East Cowes | Isle of Wight |  England | inactive |
| Osceola Country Club | Osceola | Iowa | United States of America | inactive |
| Osceola Golf Course | Pensacola | Florida | United States of America | inactive |
| Osgood Golf Course | Fargo | North Dakota | United States of America | inactive |
| Oshawa Airport Golf Club | Oshawa | Ontario |  Canada | inactive |
| Oshida Golf Club | Kitamurayama | Yamagata | Japan | inactive |
| Oshidori | Tomakomai | Hokkaido | Japan | inactive |
| Oshima | Ito | Shizuoka | Japan | inactive |
| Oshima Golf Club | Oshima | Tokyo | Japan | inactive |
| Oshitate | Kitasaku | Nagano | Japan | inactive |
| Oshkosh Country Club | Oshkosh | Wisconsin | United States of America | inactive |
| Oshkosh Country Club | Oshkosh | Nebraska | United States of America | inactive |
| Osiris Country Club | Walden | New York | United States of America | inactive |
| Oskarshamns Golfklubb | Oskarshamn | Kalmar | Sweden | inactive |
| OslerBrook Golf & Country Club | Collingwood | Ontario | Canada | inactive |
| Oslo Golfklubb | Bogstad | Oslo |  Norway | inactive |
| Osnabrucker Golf Club | Bissendorf | Lower Saxony |  Germany | inactive |
| Oso Beach Municipal Golf Club | Corpus Christi | Texas | United States of America | inactive |
| Osoyoos Golf & Country Club | Osoyoos | British Columbia | Canada | inactive |
| Osprey | The Villages | Florida | United States of America | inactive |
| Osprey | Ponce | Puerto Rico |  Puerto Rico | inactive |
| Osprey I Course (Calibogue) | Hilton Head Island | South Carolina | United States of America | inactive |
| Osprey I Course (Haig) | Hilton Head Island | South Carolina | United States of America | inactive |
| Osprey II Course (Calibogue) | Hilton Head Island | South Carolina | United States of America | inactive |
| Osprey II Course (Haig) | Hilton Head Island | South Carolina | United States of America | inactive |
| Osprey Links Golf Club | Callander | Ontario | Canada | inactive |
| Osprey Point | Kiawah Island | South Carolina | United States of America | inactive |
| Osprey Point Golf Course | Boca Raton | Florida | United States of America | inactive |
| Osprey Ridge | Lake Buena Vista | Florida | United States of America | inactive |
| Osprey Ridge Golf Club | Lunenburg | Nova Scotia | Canada | inactive |
| Osprey Shores | Guysborough | Nova Scotia | Canada | inactive |
| Osprey Shores Golf Resort | Guysborough | Nova Scotia | Canada | inactive |
| Osprey to Heron | West Palm Beach | Florida | United States of America | inactive |
| Osprey Valley Resort | Alton | Ontario | Canada | inactive |
| Osprey/Egret | The Villages | Florida | United States of America | inactive |
| Osprey/Egret | Bonita Springs | Florida | United States of America | inactive |
| Osprey/Heron | West Palm Beach | Florida | United States of America | inactive |
| Osseo Golf & Recreation Center | Osseo | Wisconsin | United States of America | inactive |
| Ost | Duisburg | North Rhine-Westphalia | Germany | inactive |