| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Oma | city | Arkansas | United States | 34.39611 | -93.26444 | 623 | 1815 |
| Oma | city | Mississippi | United States | 31.72667 | -90.14472 | 200 | 1726 |
| Omaha | city | Kansas | United States | 41.25861 | -95.9375 | 1007 | 151465 |
| Omaha | city | Texas | United States | 33.18056 | -94.74389 | 400 | 1643 |
| Omaha | city | Arkansas | United States | 36.45222 | -93.18833 | 1197 | 1172 |
| Omaha | city | Missouri | United States | 40.5325 | -92.80056 | 954 | 252 |
| Omaha | city | Illinois | United States | 37.89028 | -88.30306 | 360 | 855 |
| Omaha | city | Alabama | United States | 33.3025 | -85.31028 | 1174 | 1526 |
| Omaha | city | Georgia | United States | 32.14611 | -85.01333 | 298 | 463 |
| Omaha | city | Kentucky | United States | 37.275 | -82.84194 | 1430 | 2831 |
| Omaha | city | Virginia | United States | 37.0975 | -82.43472 | 2198 | 3336 |
| Omaha Heights subdivision | city | California | United States | 34.08139 | -118.1875 | 593 | 507910 |
| Omaha Regency | city | Kansas | United States | 41.26944 | -96.18556 | 1105 | 36750 |
| Omaha Springs | city | Georgia | United States | 33.16944 | -82.54333 | 400 | 945 |
| Omak | city | Washington | United States | 48.41111 | -119.52639 | 872 | 5028 |
| Omans | city | Washington | United States | 47.60222 | -118.07694 | 2499 | 140 |
| Omao | city | Hawaii | United States | 21.9325 | -159.48917 | 538 | 8804 |
| Omaopio | city | Hawaii | United States | 20.8 | -156.32806 | 2427 | 11078 |
| Omar | city | Illinois | United States | 37.50167 | -88.96861 | 547 | 1683 |
| Omar | city | Ohio | United States | 41.12417 | -82.87139 | 898 | 2198 |
| Omar | city | West Virginia | United States | 37.75556 | -81.99972 | 931 | 3776 |
| Omar | city | New York | United States | 44.26167 | -75.97389 | 298 | 2012 |
| Omar | city | Delaware | United States | 38.52722 | -75.2 | 19 | 5901 |
| Omar Acres | city | Maryland | United States | 39.53722 | -77.02111 | 728 | 22468 |
| Omar historical | city | Maryland | United States | 39.06306 | -76.59583 | 49 | 49101 |
| Omba historical | city | Missouri | United States | 36.86833 | -92.16111 | 935 | 397 |
| Omco | city | Nevada | United States | 38.60806 | -117.89222 | 6171 | 44 |
| Omega | city | California | United States | 39.33333 | -120.74833 | 4471 | 1211 |
| Omega | city | Idaho | United States | 47.33389 | -116.4775 | 2775 | 503 |
| Omega | city | New Mexico | United States | 34.32306 | -108.37389 | 7191 | 5 |
| Omega | city | Colorado | United States | 40.53972 | -105.08 | 5019 | 73438 |
| Omega | city | Oklahoma | United States | 35.87028 | -98.1975 | 1200 | 271 |
| Omega | city | Louisiana | United States | 31.57167 | -91.80333 | 49 | 2013 |
| Omega | city | Arkansas | United States | 33.82139 | -91.4775 | 154 | 1978 |
| Omega | city | Louisiana | United States | 32.51639 | -91.13944 | 82 | 320 |
| Omega | city | Mississippi | United States | 33.12333 | -90.31306 | 101 | 751 |
| Omega | city | Illinois | United States | 38.70444 | -88.78056 | 551 | 1169 |
| Omega | city | Indiana | United States | 40.19833 | -85.93917 | 846 | 2782 |
| Omega | city | Alabama | United States | 31.97583 | -85.785 | 396 | 554 |
| Omega | city | Kentucky | United States | 36.95194 | -84.50861 | 875 | 3340 |
| Omega | city | Georgia | United States | 31.34083 | -83.59361 | 334 | 2467 |
| Omega | city | Ohio | United States | 39.15167 | -82.91028 | 583 | 4374 |
| Omega | city | Virginia | United States | 36.67167 | -78.80694 | 423 | 1499 |
| Omega historical | city | Tennessee | United States | 36.24167 | -87.53889 | 498 | 1501 |
| Omega historical | city | Rhode Island | United States | 41.835 | -71.36139 | 19 | 155225 |
| Omemee | city | North Dakota | United States | 48.70639 | -100.35472 | 1502 | 159 |
| Omen | city | Texas | United States | 32.21722 | -95.10389 | 498 | 3531 |
| Omena | city | Michigan | United States | 45.05556 | -85.58889 | 593 | 1319 |
| Omer | city | Michigan | United States | 44.0475 | -83.85444 | 597 | 1792 |
| Omi | city | New York | United States | 42.325 | -73.68194 | 298 | 6093 |
| Omill | city | Idaho | United States | 46.49389 | -115.92583 | 2992 | 61 |
| Omira | city | California | United States | 39.96694 | -120.07639 | 4389 | 216 |
| Omlee | city | New Mexico | United States | 32.83694 | -105.97111 | 4186 | 13774 |
| Omni subdivision | city | Alabama | United States | 31.32306 | -85.81111 | 262 | 19155 |
| Omo Ranch | city | California | United States | 38.58139 | -120.57222 | 3599 | 737 |
| Omo historical | city | Louisiana | United States | 30.8075 | -92.26111 | 45 | 1773 |
| Omro | city | Wisconsin | United States | 44.03944 | -88.74417 | 793 | 2913 |
| Omro | city | New York | United States | 42.78389 | -76.43222 | 1397 | 2931 |
| Omus | city | California | United States | 38.71972 | -122.91861 | 232 | 1319 |
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