| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| South Oak Mobile Home Park | city | Georgia | United States | 33.51 | -84.64 | 898 | |
| South Oaks | city | Georgia | United States | 32.58 | -83.64 | 360 | |
| South Ocean Pines | city | Maryland | United States | 38.38 | -75.15 | 6 | |
| South Oceanside | city | California | United States | 33.18 | -117.36 | 45 | |
| South Ockedon | city | Thurrock | United Kingdom | 51.50 | 0.30 | 26 | 78867 |
| South Ockendon | city | Thurrock | United Kingdom | 51.50 | 0.30 | 26 | 78867 |
| South Ogden | city | Utah | United States | 41.19 | -111.97 | 4501 | |
| South Ogdensburg | city | New Jersey | United States | 41.07 | -74.60 | 830 | |
| South Old Bridge | city | New Jersey | United States | 40.41 | -74.35 | 16 | |
| South Olean | city | New York | United States | 42.07 | -78.44 | 1669 | |
| South Oleander | city | North Carolina | United States | 34.21 | -77.91 | 29 | |
| South Olive | city | Ohio | United States | 39.67 | -81.49 | 830 | |
| South Olympus Heights | city | Utah | United States | 40.68 | -111.82 | 4583 | |
| South Omaha | city | Nebraska | United States | 41.21 | -95.96 | 1204 | |
| South Ongelegen | city | Eastern Cape | South Africa | -33.76 | 23.38 | 5029 | 1969 |
| South Onondaga | city | New York | United States | 42.93 | -76.21 | 830 | |
| South Orange | city | New Jersey | United States | 40.75 | -74.26 | 216 | |
| South Orange Mobile Home Park | city | Florida | United States | 28.51 | -81.38 | 101 | |
| South Orchard | city | Alabama | United States | 30.46 | -88.15 | 9 | |
| South Ordokor | city | Greater Accra | Ghana | 5.57 | -0.27 | 830 | 741781 |
| South Oriel | city | North West | South Africa | -26.34 | 24.14 | 4189 | 149 |
| South Orland | city | Maine | United States | 44.51 | -68.76 | 164 | |
| South Orleans | city | Massachusetts | United States | 41.75 | -69.99 | 52 | |
| South Oropouche | city | Siparia | Trinidad and Tobago | 10.23 | -61.55 | 9 | 22893 |
| South Oroville | city | California | United States | 39.50 | -121.55 | 223 | |
| South Orrington | city | Maine | United States | 44.69 | -68.82 | 59 | |
| South Otselic | city | New York | United States | 42.65 | -75.78 | 1669 | |
| South Ottawa (historical) | city | Illinois | United States | 41.33 | -88.84 | 830 | |
| South Otterington | city | North Yorkshire | United Kingdom | 54.28 | -1.42 | 177 | 3950 |
| South Owego | city | New York | United States | 42.02 | -76.21 | 1669 | |
| South Oxford | city | New York | United States | 42.39 | -75.62 | 997 | |
| South Ozark | city | Arkansas | United States | 35.48 | -93.83 | 347 | |
| South Ozone Park | city | New York | United States | 40.67 | -73.82 | 22 |