| Mississippi State Locator Citys, Towns, Villages, and Other beginning with the letter O |
| CITY/TOWN/ VILLAGE/ETC. |
LOCATED IN THIS TOWN/CITY | COUNTY |
| Oak Bowery | #5 Township | Jones |
| Oak Grove | #5 Township | Holmes |
| Oak Grove | #4 Township | Jones |
| Oak Grove | #2 Township | Kemper |
| Oak Grove | #5 Township | Perry |
| Oak Ridge | #1 Township | Warren |
| Oak Vale | #5 Township | Lawrence |
| Oakland | #1 Township | Itawamba |
| Oakland | #4 Township | Pike |
| Oakland | #4 Township | Yalobusha |
| Oaklawn | #2 Township | Claiborne |
| Oakley | #3 Township | Hinds |
| Oaks | #5 Township | Madison |
| Obadiah | #3 Township | Lauderdale |
| Ocean Springs | #4 Township | Jackson |
| Ocobla | #1 Township | Neshoba |
| Ofahoma | #3 Township | Leake |
| Oil City | #1 Township | Yazoo |
| Okahola | #1 Township | Lamar |
| Oklahoma | #3 Township | Carroll |
| Okolona | #3 Township | Chickasaw |
| Oktoc | #5 Township | Oktibbeha |
| Old Americus | #1 Township | Jackson |
| Old Augusta | #1 Township | Perry |
| Old Avera | #2 Township | Greene |
| Old Dominion | #5 Township | Leflore |
| Old Houlka | #2 Township | Chickasaw |
| Old Malcum | #2 Township | Lincoln |
| Old Myrtle | #2 Township | Union |
| Old Red Star | #5 Township | Lincoln |
| Old Taylorsville | #2 Township | Smith |
| Old Union | #5 Township | Lee |
| Oldenburg | #2 Township | Franklin |
| Oldham | #1 Township | Tishomingo |
| Olio | #2 Township | Amite |
| Olive Branch | #1 Township | DeSoto |
| Oloh | #5 Township | Lamar |
| Oma | #2 Township | Lawrence |
| Omega | #4 Township | Holmes |
| O'Neil | #3 Township | Amite |
| Onward | #2 Township | Sharkey |
| Ora | #3 Township | Covington |
| Orange | #2 Township | Franklin |
| Orange | #2 Township | Jasper |
| Orange Grove | #2 Township | Harrison |
| Orange Grove | #3 Township | Jackson |
| O'Reilly | #5 Township | Bolivar |
| Orion | #4 Township | Marshall |
| Orvisburg | #2 Township | Pearl River |
| Osborn | #2 Township | Oktibbeha |
| Osyka | #5 Township | Pike |
| Overby | #5 Township | Washington |
| Ovett | #4 Township | Jones |
| Owen Wells | #1 Township | Holmes |
| Oxberry | #5 Township | Grenada |
| Oxford | #3 Township | Amite |
| Oxford | #5 Township | LaFayette |
| Ozona | #5 Township | Pearl River |