Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Moores Junction | Populated Place | 239 | Perry | 39 42 11 N | 082 06 59 W |
| Moran Bridge | Bridge | 239 | Licking | 40 11 09 N | 082 11 43 W |
| Mount Adams Playground | Park | 239 | Hamilton | 39 06 41 N | 084 29 49 W |
| Mount Herman Church | Church | 239 | Meigs | 39 05 35 N | 081 58 05 W |
| Mount Holly | Populated Place | 239 | Warren | 39 34 18 N | 084 01 57 W |
| Mount Zion United Methodist Church | Church | 239 | Hamilton | 39 08 07 N | 084 29 13 W |
| Mount Zion United Methodist Church | Church | 239 | Hancock | 41 01 59 N | 083 32 40 W |
| New Genesis Baptist Church | Church | 239 | Franklin | 39 57 27 N | 082 57 38 W |
| New Thought Temple (historical) | Church | 239 | Cuyahoga | 41 25 30 N | 081 41 47 W |
| Nickelplate (historical) | Populated Place | 239 | Lorain | 41 15 51 N | 082 09 28 W |
| Nickelplate Post Office (historical) | Post Office | 239 | Lorain | 41 15 50 N | 082 09 30 W |
| North Dover School (historical) | School | 239 | Fulton | 41 37 53 N | 084 07 53 W |
| North Park | Park | 239 | Fulton | 41 32 57 N | 084 08 42 W |
| North Plaza Shopping Center | Locale | 239 | Montgomery | 39 48 05 N | 084 11 36 W |
| Oeder Lake | Reservoir | 239 | Warren | 39 20 54 N | 084 10 60 W |
| Oeder Lake Dam | Dam | 239 | Warren | 39 20 54 N | 084 10 60 W |
| Old Front Street Church of God | Church | 239 | Hamilton | 39 07 57 N | 084 30 14 W |
| Otterbein Chapel Cemetery | Cemetery | 239 | Hocking | 39 34 47 N | 082 17 59 W |
| Ottokee Post Office (historical) | Post Office | 239 | Fulton | 41 36 10 N | 084 08 05 W |
| Our Lady of Mercy Catholic Church | Church | 239 | Fulton | 41 40 27 N | 084 19 22 W |
| Overbrook Presbyterian Church | Church | 239 | Franklin | 40 02 46 N | 083 01 16 W |
| Parkview Church of Christ | Church | 239 | Hancock | 41 03 21 N | 083 38 15 W |
| Paw Paw Church Cemetery | Cemetery | 239 | Washington | 39 34 04 N | 081 20 17 W |
| Philippi Missionary Baptist Church | Church | 239 | Montgomery | 39 46 54 N | 084 15 42 W |
| Pleasant Valley | Populated Place | 239 | Coshocton | 40 14 44 N | 081 51 14 W |
| Pleasant Valley School | School | 239 | Coshocton | 40 14 47 N | 081 51 11 W |
| Pleasant Valley School (historical) | School | 239 | Ross | 39 22 48 N | 083 04 39 W |
| Providence Church | Church | 239 | Gallia | 38 41 01 N | 082 15 03 W |
| Providence School (historical) | School | 239 | Clermont | 39 07 00 N | 084 13 31 W |
| Ream Cemetery | Cemetery | 239 | Fairfield | 39 39 04 N | 082 33 17 W |