| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Oak Grove | city | Oklahoma | United States | 34.61472 | -96.96667 | 1148 | 807 |
| Oak Grove | city | Oklahoma | United States | 36.20528 | -96.33778 | 757 | 2784 |
| Oak Grove | city | Oklahoma | United States | 36.91778 | -94.71139 | 898 | 2039 |
| Oak Hill | city | Oklahoma | United States | 34.04083 | -94.83556 | 498 | 768 |
| Oak Ridge | city | Oklahoma | United States | 36.89694 | -96.11278 | 797 | 252 |
| Oakhurst | city | Oklahoma | United States | 36.07528 | -96.06417 | 702 | 23878 |
| Oakland | city | Oklahoma | United States | 34.1 | -96.79361 | 803 | 3575 |
| Oakman | city | Oklahoma | United States | 34.83222 | -96.61667 | 1007 | 7827 |
| Oakridge | city | Oklahoma | United States | 36.075 | -96.03556 | 698 | 52839 |
| Oaks | city | Oklahoma | United States | 36.16611 | -94.85444 | 1059 | 1138 |
| Oakwood | city | Oklahoma | United States | 35.93167 | -98.70472 | 1896 | 316 |
| Oberlin | city | Oklahoma | United States | 33.87361 | -95.85139 | 456 | 626 |
| Ochelata | city | Oklahoma | United States | 36.6 | -95.97944 | 748 | 1072 |
| Octavia | city | Oklahoma | United States | 34.52667 | -94.70278 | 846 | 305 |
| Odetta | city | Oklahoma | United States | 34.66389 | -98.84333 | 1397 | 745 |
| Ogeechee | city | Oklahoma | United States | 36.7625 | -94.81417 | 813 | 1582 |
| Oglesby | city | Oklahoma | United States | 36.62639 | -95.85639 | 652 | 1494 |
| Oil Center | city | Oklahoma | United States | 34.86861 | -96.82389 | 1099 | 1034 |
| Oil City | city | Oklahoma | United States | 34.52306 | -98.07278 | 1105 | 2533 |
| Oil City | city | Oklahoma | United States | 34.27444 | -97.41806 | 997 | 1538 |
| Oilton | city | Oklahoma | United States | 36.08444 | -96.58333 | 797 | 1629 |
| Okarche | city | Oklahoma | United States | 35.72583 | -97.97611 | 1236 | 829 |
| Okay | city | Oklahoma | United States | 35.85056 | -95.31806 | 524 | 2190 |
| Okeene | city | Oklahoma | United States | 36.11611 | -98.31667 | 1200 | 588 |
| Okemah | city | Oklahoma | United States | 35.4325 | -96.30472 | 915 | 3171 |
| Okesa | city | Oklahoma | United States | 36.71278 | -96.13444 | 751 | 260 |
| Okfuskee | city | Oklahoma | United States | 35.59528 | -96.22806 | 688 | 515 |
| Oklahoma City | city | Oklahoma | United States | 35.4675 | -97.51611 | 1181 | 125550 |
| Oklahoma Hills | city | Oklahoma | United States | 34.48194 | -97.92806 | 1082 | 14289 |
| Okmulgee | city | Oklahoma | United States | 35.62333 | -95.96028 | 688 | 13609 |
| Okoee | city | Oklahoma | United States | 36.51861 | -95.09444 | 793 | 1199 |
| Oktaha | city | Oklahoma | United States | 35.57639 | -95.47472 | 597 | 1215 |
| Old Allison | city | Oklahoma | United States | 33.88139 | -96.33694 | 610 | 1540 |
| Old Bennington | city | Oklahoma | United States | 34.0475 | -96.025 | 659 | 341 |
| Old Bliss | city | Oklahoma | United States | 36.5475 | -97.14417 | 997 | 609 |
| Old Eucha | city | Oklahoma | United States | 36.34472 | -94.945 | 905 | 1266 |
| Old Farris | city | Oklahoma | United States | 34.24389 | -95.875 | 498 | 663 |
| Old Retrop | city | Oklahoma | United States | 35.14528 | -99.34222 | 1738 | 381 |
| Old Scott | city | Oklahoma | United States | 34.36083 | -97.43944 | 895 | 647 |
| Oleta | city | Oklahoma | United States | 34.19944 | -95.34361 | 521 | 273 |
| Olive | city | Oklahoma | United States | 36.02833 | -96.47972 | 895 | 2359 |
| Olive | city | Oklahoma | United States | 33.90778 | -96.44778 | 698 | 1976 |
| Olney | city | Oklahoma | United States | 34.4725 | -96.36083 | 606 | 534 |
| Olustee | city | Oklahoma | United States | 34.54861 | -99.42194 | 1315 | 291 |
| Omega | city | Oklahoma | United States | 35.87028 | -98.1975 | 1200 | 271 |
| Onapa | city | Oklahoma | United States | 35.40583 | -95.55306 | 666 | 1858 |
| Oneida | city | Oklahoma | United States | 35.97083 | -98.06694 | 1095 | 322 |
| Oneta | city | Oklahoma | United States | 36.01889 | -95.70778 | 725 | 12618 |
| Ontario | city | Oklahoma | United States | 36.9875 | -94.76278 | 839 | 4698 |
| Oologah | city | Oklahoma | United States | 36.44694 | -95.70806 | 656 | 1869 |
| Oowala | city | Oklahoma | United States | 36.42333 | -95.61444 | 679 | 2925 |
| Opah | city | Oklahoma | United States | 36.75111 | -96.29306 | 898 | 680 |
| Optima | city | Oklahoma | United States | 36.75833 | -101.35583 | 3024 | 260 |
| Ord | city | Oklahoma | United States | 33.91 | -95.49917 | 403 | 706 |
| Orienta | city | Oklahoma | United States | 36.36 | -98.47361 | 1240 | 1023 |
| Oriental | city | Oklahoma | United States | 35.53639 | -96.22861 | 816 | 425 |
| Orion | city | Oklahoma | United States | 36.21667 | -98.77833 | 1751 | 145 |
| Orlando | city | Oklahoma | United States | 36.14889 | -97.37778 | 1095 | 560 |
| Orr | city | Oklahoma | United States | 34.03194 | -97.53528 | 797 | 434 |
| Osage | city | Oklahoma | United States | 36.29278 | -96.41556 | 774 | 1840 |
| Osage Junction | city | Oklahoma | United States | 36.53528 | -96.71806 | 892 | 495 |
| Oscar | city | Oklahoma | United States | 33.98389 | -97.7525 | 833 | 305 |
| Osceola historical | city | Oklahoma | United States | 35.75056 | -99.17694 | 1811 | 173 |
| Oseuma | city | Oklahoma | United States | 36.72972 | -94.89056 | 810 | 1639 |
| Oswalt | city | Oklahoma | United States | 34.0275 | -97.33444 | 898 | 430 |
| Otoe | city | Oklahoma | United States | 36.38389 | -97.18306 | 997 | 367 |
| Ottawa | city | Oklahoma | United States | 36.85667 | -94.7875 | 843 | 2189 |
| Overbrook | city | Oklahoma | United States | 34.06722 | -97.14083 | 705 | 2308 |
| Owasso | city | Oklahoma | United States | 36.26944 | -95.85444 | 597 | 15255 |
| Owen | city | Oklahoma | United States | 36.99917 | -95.93139 | 744 | 2068 |
| Ozark | city | Oklahoma | United States | 34.63806 | -99.21139 | 1348 | 3875 |
|
|