| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| McArthur | city | Ohio | United States | 39.25 | -82.48 | 830 | |
| McAvan | city | Ohio | United States | 39.39 | -81.57 | 879 | |
| McCammon Estates | city | Ohio | United States | 40.17 | -82.97 | 898 | |
| McCance | city | Ohio | United States | 40.70 | -81.88 | 1069 | |
| McCartyville | city | Ohio | United States | 40.39 | -84.26 | 971 | |
| McChesney Acres | city | Ohio | United States | 40.99 | -81.42 | 1131 | |
| McChesney Meadows | city | Ohio | United States | 40.98 | -81.42 | 1131 | |
| McClainville | city | Ohio | United States | 40.02 | -80.79 | 830 | |
| McClimansville | city | Ohio | United States | 39.73 | -83.27 | 898 | |
| McClintocksburg | city | Ohio | United States | 41.17 | -81.02 | 938 | |
| McClure | city | Ohio | United States | 41.37 | -83.94 | 830 | |
| McClurg | city | Ohio | United States | 41.00 | -80.65 | 1125 | |
| McComb | city | Ohio | United States | 41.11 | -83.79 | 830 | |
| McConnelsville | city | Ohio | United States | 39.65 | -81.85 | 830 | |
| McCoppin Mill | city | Ohio | United States | 39.18 | -83.44 | 898 | |
| McCormick (historical) | city | Ohio | United States | 38.83 | -82.36 | 830 | |
| McCoy | city | Ohio | United States | 38.91 | -82.71 | 830 | |
| McCuneville | city | Ohio | United States | 39.63 | -82.23 | 997 | |
| McCutchenville | city | Ohio | United States | 40.99 | -83.26 | 830 | |
| McDaniel Crossroad | city | Ohio | United States | 38.76 | -82.48 | 830 | |
| McDermott | city | Ohio | United States | 38.83 | -83.06 | 898 | |
| McDonald | city | Ohio | United States | 41.16 | -80.72 | 931 | |
| McDonald | city | Ohio | United States | 39.86 | -81.85 | 830 | |
| McDonald (historical) | city | Ohio | United States | 39.53 | -84.78 | 997 | |
| McDonald Subdivision | city | Ohio | United States | 41.46 | -84.56 | 830 | |
| McDonaldsville | city | Ohio | United States | 40.89 | -81.48 | 1118 | |
| McFarlands Corners | city | Ohio | United States | 41.41 | -81.34 | 1151 | |
| McGarry (historical) | city | Ohio | United States | 40.88 | -81.07 | 1118 | |
| McGaw | city | Ohio | United States | 38.64 | -83.22 | 830 | |
| McGill | city | Ohio | United States | 41.02 | -84.77 | 830 | |
| McGonigle | city | Ohio | United States | 39.45 | -84.68 | 898 | |
| McGuffey | city | Ohio | United States | 40.69 | -83.79 | 971 | |
| McGuffey Heights | city | Ohio | United States | 41.13 | -80.59 | 1092 | |
| McIntyre | city | Ohio | United States | 40.31 | -80.78 | 1197 | |
| McKay | city | Ohio | United States | 40.71 | -82.24 | 1197 | |
| McKays | city | Ohio | United States | 39.54 | -83.88 | 997 | |
| McKays Corners | city | Ohio | United States | 41.02 | -80.63 | 1046 | |
| McKeever Mobile Home Park | city | Ohio | United States | 40.12 | -83.75 | 1072 | |
| McKendree | city | Ohio | United States | 39.79 | -83.27 | 898 | |
| McKinley | city | Ohio | United States | 41.42 | -81.80 | 830 | |
| McKinley Heights | city | Ohio | United States | 41.18 | -80.72 | 954 | |
| McKinley Woods | city | Ohio | United States | 41.53 | -83.66 | 830 | |
| McKitterick (historical) | city | Ohio | United States | 38.91 | -82.54 | 830 | |
| McLean | city | Ohio | United States | 39.49 | -83.34 | 898 | |
| McLeish | city | Ohio | United States | 39.54 | -82.10 | 830 | |
| McLuney | city | Ohio | United States | 39.74 | -82.10 | 830 | |
| McMahan Mobile Home Park | city | Ohio | United States | 39.80 | -84.12 | 830 | |
| McMahan's Mobile Home Park | city | Ohio | United States | 39.41 | -83.81 | 1043 | |
| McMorran | city | Ohio | United States | 40.39 | -83.85 | 1069 | |
| McQuaid (historical) | city | Ohio | United States | 40.80 | -81.75 | 1013 | |
| McVitty | city | Ohio | United States | 40.76 | -83.54 | 898 | |
| McZena | city | Ohio | United States | 40.70 | -82.14 | 1095 | |
| Mcfarland's Mobile Home Park | city | Ohio | United States | 40.81 | -82.96 | 1000 |