| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| O'Bannon | city | Kentucky | United States | 38.29 | -85.51 | 830 | |
| Oak Forest | city | Kentucky | United States | 36.72 | -86.10 | 830 | |
| Oak Grove | city | Kentucky | United States | 37.98 | -85.73 | 830 | |
| Oak Grove | city | Kentucky | United States | 37.34 | -86.75 | 830 | |
| Oak Grove | city | Kentucky | United States | 36.99 | -88.69 | 830 | |
| Oak Grove | city | Kentucky | United States | 36.67 | -87.44 | 830 | |
| Oak Grove (historical) | city | Kentucky | United States | 36.92 | -86.83 | 830 | |
| Oak Grove (historical) | city | Kentucky | United States | 36.74 | -86.52 | 830 | |
| Oak Grove (historical) | city | Kentucky | United States | 37.38 | -83.90 | 1669 | |
| Oak Grove (historical) | city | Kentucky | United States | 37.11 | -85.20 | 898 | |
| Oak Hill | city | Kentucky | United States | 37.21 | -87.46 | 830 | |
| Oak Hill | city | Kentucky | United States | 37.06 | -84.65 | 1000 | |
| Oak Hill (historical) | city | Kentucky | United States | 38.07 | -83.29 | 1099 | |
| Oak Hill (historical) | city | Kentucky | United States | 37.76 | -84.60 | 830 | |
| Oak Level | city | Kentucky | United States | 36.87 | -88.47 | 830 | |
| Oak Ridge | city | Kentucky | United States | 37.29 | -86.24 | 830 | |
| Oak Ridge | city | Kentucky | United States | 37.35 | -86.62 | 830 | |
| Oak Ridge | city | Kentucky | United States | 38.97 | -84.50 | 830 | |
| Oak Ridge | city | Kentucky | United States | 37.74 | -87.04 | 830 | |
| Oak Ridge (historical) | city | Kentucky | United States | 38.47 | -83.50 | 1023 | |
| Oak Ridge (historical) | city | Kentucky | United States | 36.82 | -86.54 | 830 | |
| Oak Ridge (historical) | city | Kentucky | United States | 37.61 | -86.11 | 830 | |
| Oakbrook | city | Kentucky | United States | 39.00 | -84.69 | 862 | |
| Oakdale | city | Kentucky | United States | 37.04 | -88.57 | 337 | |
| Oakdale | city | Kentucky | United States | 37.56 | -83.52 | 830 | |
| Oakdale | city | Kentucky | United States | 38.20 | -85.78 | 830 | |
| Oakdale (historical) | city | Kentucky | United States | 37.86 | -84.63 | 898 | |
| Oakla | city | Kentucky | United States | 38.25 | -83.72 | 830 | |
| Oakland | city | Kentucky | United States | 37.04 | -86.25 | 830 | |
| Oakland (historical) | city | Kentucky | United States | 37.76 | -84.91 | 885 | |
| Oakland (historical) | city | Kentucky | United States | 36.65 | -86.92 | 830 | |
| Oakland (historical) | city | Kentucky | United States | 38.62 | -84.07 | 830 | |
| Oakland (historical) | city | Kentucky | United States | 38.97 | -84.34 | 830 | |
| Oakland (historical) | city | Kentucky | United States | 37.70 | -85.17 | 830 | |
| Oakland Addition (historical) | city | Kentucky | United States | 38.40 | -82.60 | 830 | |
| Oaklawn Subdivision (historical) | city | Kentucky | United States | 38.20 | -83.93 | 1000 | |
| Oakley | city | Kentucky | United States | 37.24 | -84.10 | 1125 | |
| Oakley Home (historical) | city | Kentucky | United States | 37.45 | -87.59 | 830 | |
| Oakliff Store (historical) | city | Kentucky | United States | 37.45 | -87.53 | 830 | |
| Oaks | city | Kentucky | United States | 36.97 | -88.54 | 321 | |
| Oaks | city | Kentucky | United States | 36.72 | -83.56 | 1249 | |
| Oakton | city | Kentucky | United States | 36.66 | -89.07 | 364 | |
| Oakville | city | Kentucky | United States | 36.75 | -86.88 | 830 | |
| Odds | city | Kentucky | United States | 37.76 | -82.69 | 830 | |
| Oddville | city | Kentucky | United States | 38.46 | -84.24 | 846 | |
| Odfield Mobile Home Park | city | Kentucky | United States | 37.87 | -83.21 | 830 | |
| Odgen Gap | city | Kentucky | United States | 37.36 | -82.99 | 1236 | |
| Offill's Mill (historical) | city | Kentucky | United States | 38.24 | -83.24 | 990 | |
| Offutt | city | Kentucky | United States | 37.85 | -82.73 | 830 | |
| Ogden Ridge (historical) | city | Kentucky | United States | 38.51 | -83.99 | 830 | |
| Ogle | city | Kentucky | United States | 37.03 | -83.71 | 1000 | |
| Oil Center | city | Kentucky | United States | 37.11 | -84.71 | 830 | |
| Oil City | city | Kentucky | United States | 37.03 | -85.98 | 830 | |
| Oil Springs | city | Kentucky | United States | 37.81 | -82.94 | 944 | |
| Oil Valley | city | Kentucky | United States | 36.77 | -84.80 | 958 | |
| Oilton | city | Kentucky | United States | 36.77 | -84.88 | 977 | |
| Oklahoma | city | Kentucky | United States | 37.66 | -86.88 | 830 | |
| Okolona | city | Kentucky | United States | 38.14 | -85.69 | 830 | |
| Olaton | city | Kentucky | United States | 37.53 | -86.69 | 830 | |
| Olcott | city | Kentucky | United States | 36.69 | -83.83 | 1669 | |
| Old Belmont (historical) | city | Kentucky | United States | 37.89 | -85.70 | 830 | |
| Old Bend (historical) | city | Kentucky | United States | 37.34 | -84.12 | 1023 | |
| Old Brownsboro Place | city | Kentucky | United States | 38.29 | -85.61 | 830 | |
| Old Christianburg | city | Kentucky | United States | 38.28 | -85.08 | 859 | |
| Old Clay City Road (historical) | city | Kentucky | United States | 37.86 | -83.88 | 830 | |
| Old Cypress | city | Kentucky | United States | 36.72 | -88.90 | 387 | |
| Old Eastwood | city | Kentucky | United States | 38.24 | -85.46 | 830 | |
| Old Empire (historical) | city | Kentucky | United States | 37.11 | -87.49 | 830 | |
| Old Flat Lick | city | Kentucky | United States | 36.84 | -83.77 | 1089 | |
| Old Landing | city | Kentucky | United States | 37.64 | -83.81 | 1141 | |
| Old Linwood (historical) | city | Kentucky | United States | 37.33 | -85.77 | 830 | |
| Old Lombard (historical) | city | Kentucky | United States | 37.82 | -83.73 | 830 | |
| Old Mayfield (historical) | city | Kentucky | United States | 36.89 | -88.92 | 830 | |
| Old Olga | city | Kentucky | United States | 36.93 | -85.17 | 941 | |
| Old Pine Grove | city | Kentucky | United States | 38.03 | -84.27 | 1000 | |
| Old Salem (historical) | city | Kentucky | United States | 36.59 | -88.26 | 830 | |
| Old Sparta | city | Kentucky | United States | 38.68 | -84.90 | 830 | |
| Old Stephensburg | city | Kentucky | United States | 37.61 | -86.02 | 830 | |
| Old Sydney (historical) | city | Kentucky | United States | 37.58 | -82.37 | 1669 | |
| Old Trinity (historical) | city | Kentucky | United States | 36.89 | -86.45 | 830 | |
| Old Union (historical) | city | Kentucky | United States | 36.85 | -86.44 | 830 | |
| Old Volney | city | Kentucky | United States | 36.77 | -87.01 | 830 | |
| Old Washington | city | Kentucky | United States | 38.62 | -83.81 | 912 | |
| Old Witt School Neighborhood (historical) | city | Kentucky | United States | 37.74 | -83.99 | 830 | |
| Old Zion (historical) | city | Kentucky | United States | 36.84 | -86.56 | 830 | |
| Oldham | city | Kentucky | United States | 38.50 | -85.42 | 830 | |
| Oldham Acres | city | Kentucky | United States | 38.40 | -85.62 | 830 | |
| Oldtown | city | Kentucky | United States | 38.44 | -82.90 | 830 | |
| Olga | city | Kentucky | United States | 36.95 | -85.16 | 1000 | |
| Olin | city | Kentucky | United States | 37.35 | -83.97 | 1669 | |
| Olive | city | Kentucky | United States | 36.80 | -88.26 | 830 | |
| Olive Branch | city | Kentucky | United States | 38.32 | -83.82 | 898 | |
| Olive Branch | city | Kentucky | United States | 38.13 | -85.26 | 830 | |
| Olive Hill | city | Kentucky | United States | 38.30 | -83.17 | 898 | |
| Oliver Station | city | Kentucky | United States | 38.62 | -82.86 | 830 | |
| Olivers (historical) | city | Kentucky | United States | 37.29 | -83.30 | 1043 | |
| Olivers (historical) | city | Kentucky | United States | 37.89 | -84.19 | 830 | |
| Ollie | city | Kentucky | United States | 37.25 | -86.18 | 830 | |
| Olmstead | city | Kentucky | United States | 36.75 | -87.01 | 830 | |
| Olney | city | Kentucky | United States | 37.22 | -87.78 | 390 | |
| Olympia | city | Kentucky | United States | 38.10 | -83.70 | 830 | |
| Olympia Springs | city | Kentucky | United States | 38.06 | -83.67 | 830 | |
| Omaha | city | Kentucky | United States | 37.28 | -82.84 | 1669 | |
| Omega | city | Kentucky | United States | 36.95 | -84.51 | 875 | |
| Oneida | city | Kentucky | United States | 37.27 | -83.65 | 889 | |
| Oneonta | city | Kentucky | United States | 38.98 | -84.30 | 830 | |
| Ono | city | Kentucky | United States | 36.99 | -84.97 | 902 | |
| Onton | city | Kentucky | United States | 37.56 | -87.44 | 830 | |
| Oolite | city | Kentucky | United States | 38.07 | -86.28 | 830 | |
| Ootens Store (historical) | city | Kentucky | United States | 36.74 | -85.24 | 875 | |
| Open Gates | city | Kentucky | United States | 38.01 | -84.54 | 1000 | |
| Ophir | city | Kentucky | United States | 37.91 | -83.01 | 1036 | |
| Orange Grove (historical) | city | Kentucky | United States | 37.11 | -87.38 | 830 | |
| Orangeburg | city | Kentucky | United States | 38.57 | -83.69 | 830 | |
| Orchard Grass Hills | city | Kentucky | United States | 38.32 | -85.52 | 830 | |
| Ordinary | city | Kentucky | United States | 38.15 | -83.19 | 967 | |
| Ore Mines (historical) | city | Kentucky | United States | 38.14 | -83.68 | 830 | |
| Oregon | city | Kentucky | United States | 37.91 | -84.82 | 830 | |
| Orell | city | Kentucky | United States | 38.07 | -85.88 | 830 | |
| Oriole | city | Kentucky | United States | 37.30 | -87.57 | 400 | |
| Orkney | city | Kentucky | United States | 37.43 | -82.74 | 843 | |
| Orlando | city | Kentucky | United States | 37.37 | -84.27 | 951 | |
| Orr | city | Kentucky | United States | 38.14 | -82.89 | 830 | |
| Ortiz | city | Kentucky | United States | 37.56 | -87.61 | 830 | |
| Orville | city | Kentucky | United States | 38.40 | -84.92 | 830 | |
| Osborn | city | Kentucky | United States | 37.48 | -82.61 | 830 | |
| Osborne Fork (historical) | city | Kentucky | United States | 37.35 | -82.65 | 1230 | |
| Oscaloosa | city | Kentucky | United States | 37.10 | -82.89 | 1200 | |
| Oscar | city | Kentucky | United States | 37.14 | -89.03 | 321 | |
| Otia | city | Kentucky | United States | 36.69 | -85.57 | 830 | |
| Ottawa | city | Kentucky | United States | 37.36 | -84.46 | 1200 | |
| Ottenheim | city | Kentucky | United States | 37.42 | -84.60 | 1210 | |
| Otter Pond | city | Kentucky | United States | 37.03 | -87.82 | 830 | |
| Ottusville | city | Kentucky | United States | 38.32 | -84.90 | 830 | |
| Outland (historical) | city | Kentucky | United States | 36.61 | -88.26 | 830 | |
| Ova | city | Kentucky | United States | 37.73 | -83.17 | 1151 | |
| Oven Fork | city | Kentucky | United States | 37.06 | -82.81 | 1699 | |
| Overda | city | Kentucky | United States | 38.12 | -82.80 | 898 | |
| Ovil | city | Kentucky | United States | 36.95 | -87.29 | 830 | |
| Owens (historical) | city | Kentucky | United States | 36.55 | -89.24 | 298 | |
| Owens School (historical) | city | Kentucky | United States | 37.24 | -88.17 | 403 | |
| Owens School (historical) | city | Kentucky | United States | 37.24 | -88.17 | 403 | |
| Owensboro | city | Kentucky | United States | 37.77 | -87.11 | 400 | |
| Owenton | city | Kentucky | United States | 38.54 | -84.84 | 898 | |
| Owingsville | city | Kentucky | United States | 38.14 | -83.76 | 898 | |
| Owsley | city | Kentucky | United States | 37.50 | -82.59 | 830 | |
| Oxford | city | Kentucky | United States | 38.27 | -84.50 | 902 | |
| Oz | city | Kentucky | United States | 36.71 | -84.57 | 830 | |
| Ozark | city | Kentucky | United States | 37.08 | -85.23 | 898 |