| O2 Resort | Taebaek | Gangwon |  South Korea | inactive |
| Oahu Country Club | Honolulu | Hawaii |  United States of America | inactive |
| Oak | Perham | Minnesota | United States of America | inactive |
| Oak | Haughton | Louisiana | United States of America | inactive |
| Oak | Mandeville | Louisiana | United States of America | inactive |
| Oak | Modesto | California | United States of America | inactive |
| Oak | Soraku | Kyoto |  Japan | inactive |
| Oak | Jerseyville | Ontario |  Canada | inactive |
| Oak | Steinbach | Manitoba | Canada | inactive |
| Oak Bay Golf And Country Club | Port Severn | Ontario | Canada | inactive |
| Oak Brook Golf Club | Oak Brook | Illinois | United States of America | inactive |
| Oak Brook Golf Course | Edwardsville | Illinois | United States of America | inactive |
| Oak Country Club | De Soto | Kansas | United States of America | inactive |
| Oak Creek (Alternate Tees) | Red Bluff | California | United States of America | inactive |
| Oak Creek Country Club | Greenville | Texas | United States of America | inactive |
| Oak Creek Golf Club | Irvine | California | United States of America | inactive |
| Oak Creek Golf Course | Red Bluff | California | United States of America | inactive |
| Oak Crest Golf Club | Norway | Michigan | United States of America | inactive |
| Oak Gables Golf Club & Learning Centre | Jerseyville | Ontario | Canada | inactive |
| Oak Glen | El Cajon | California | United States of America | inactive |
| Oak Glen Country Club | Stillwater | Minnesota | United States of America | inactive |
| Oak Glen Golf Course | Robinson | Illinois | United States of America | inactive |
| Oak Grove (Alternate Tees) | Terrell | Texas | United States of America | inactive |
| Oak Grove Country Club | Oxford | Indiana | United States of America | inactive |
| Oak Grove Golf Club | New Boston | Texas | United States of America | inactive |
| Oak Grove Golf Course | Terrell | Texas | United States of America | inactive |
| Oak Grove Golf Course | Atwater | Ohio | United States of America | inactive |
| Oak Grove Golf Course | Harvard | Illinois | United States of America | inactive |
| Oak Harbor Golf Club | Oak Harbor | Ohio | United States of America | inactive |
| Oak Harbor Golf Club | Slidell | Louisiana | United States of America | inactive |
| Oak Harbor Golf Course | Baudette | Minnesota | United States of America | inactive |
| Oak Haven Golf Club - Macon | Macon | Georgia | United States of America | inactive |
| Oak Hill Country Club | Rochester | New York | United States of America | inactive |
| Oak Hill Country Club | Fitchburg | Massachusetts | United States of America | inactive |
| Oak Hill Country Club | Clinton | Kentucky | United States of America | inactive |
| Oak Hill Golf Club | Milford | New Jersey | United States of America | inactive |
| Oak Hill Golf Club | Rice | Minnesota | United States of America | inactive |
| Oak Hill Golf Course | Meredith | New Hampshire | United States of America | inactive |
| Oak Hills Country Club | San Antonio | Texas | United States of America | inactive |
| Oak Hills Country Club | Omaha | Nebraska | United States of America | inactive |
| Oak Hills Country Club | Dixon | Missouri | United States of America | inactive |
| Oak Hills Country Club | Palos Heights | Illinois | United States of America | inactive |
| Oak Hills Country Club | De Witt | Arkansas | United States of America | inactive |
| Oak Hills Country Club | Wonju | Gangwon | South Korea | inactive |
| Oak Hills Country Club | Katori | Chiba | Japan | inactive |
| Oak Hills Golf & Country Club | Ada | Oklahoma | United States of America | inactive |
| Oak Hills Golf Center | Jefferson City | Missouri | United States of America | inactive |
| Oak Hills Golf Club | Columbia | South Carolina | United States of America | inactive |
| Oak Hills Golf Club | Stirling | Ontario | Canada | inactive |
| Oak Hills Golf Course | Oak Creek | Wisconsin | United States of America | inactive |