Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Morris Chapel | Church | 304 | Hocking | 39 29 20 N | 082 27 51 W |
| Morris Chapel | Church | 207 | Jackson | 39 03 18 N | 082 27 29 W |
| Morris Chapel | Church | 204 | Meigs | 39 03 05 N | 082 05 02 W |
| Morris Chapel Cemetery | Cemetery | 308 | Hocking | 39 29 19 N | 082 27 49 W |
| Morris Chapel Cemetery | Cemetery | 264 | Hocking | 39 25 06 N | 082 19 31 W |
| Morris Chapel Cemetery | Cemetery | 311 | Summit | 41 10 55 N | 081 39 56 W |
| Morris Church | Church | 260 | Pickaway | 39 33 51 N | 082 53 29 W |
| Morris Ditch | Canal | 241 | Van Wert | 40 48 23 N | 084 27 57 W |
| Morris Hall | Building | 267 | Butler | 39 30 08 N | 084 43 58 W |
| Morris House | Building | 280 | Butler | 39 30 40 N | 084 44 08 W |
| Morris School (historical) | School | 320 | Auglaize | 40 37 46 N | 083 58 34 W |
| Morris School (historical) | School | 194 | Cuyahoga | 41 30 29 N | 081 40 50 W |
| Morris School (historical) | School | 228 | Van Wert | 40 55 02 N | 084 24 46 W |
| Morris United Brethren Cemetery | Cemetery | 256 | Pickaway | 39 33 51 N | 082 53 31 W |
| Morris Woods State Nature Preserve | Park | 376 | Licking | 40 10 02 N | 082 38 03 W |
| Morrison Cemetery | Cemetery | 292 | Hardin | 40 37 26 N | 083 30 43 W |
| Morrison Corners | Locale | 279 | Coshocton | 40 14 53 N | 081 40 27 W |
| Morrison Creek | Stream | | Seneca | 41 08 16 N | 083 09 43 W |
| Morrison Elementary School | School | 203 | Athens | 39 18 23 N | 082 06 16 W |
| Morrison Elementary School | School | 271 | Montgomery | 39 50 00 N | 084 11 31 W |
| Morrison Field | Airport | 262 | Trumbull | 41 25 21 N | 080 52 40 W |
| Morrison Hollow | Valley | | Adams | 38 44 20 N | 083 23 38 W |
| Morrison Hollow | Valley | | Hocking | 39 21 42 N | 082 43 28 W |
| Morrison Lake | Lake | 203 | Seneca | 41 11 40 N | 083 07 01 W |
| Morrison Run | Stream | | Mahoning | 41 07 33 N | 080 49 28 W |
| Morrison Run | Stream | | Muskingum | 39 51 49 N | 082 03 00 W |
| Morrison Tower | Building | 229 | Franklin | 39 59 45 N | 083 00 47 W |
| Morrisons Landing | Locale | 155 | Scioto | 38 37 12 N | 083 12 51 W |
| Morristown | Populated Place | 206 | Athens | 39 24 52 N | 082 07 14 W |
| Morristown | Populated Place | 386 | Belmont | 40 03 47 N | 081 04 27 W |
| Morristown Elementary School | School | 386 | Belmont | 40 03 40 N | 081 04 24 W |
| Morristown First Cemetery | Cemetery | 379 | Belmont | 40 03 46 N | 081 04 21 W |
| Morristown Historic District | Park | 388 | Belmont | 40 03 50 N | 081 04 21 W |
| Morristown Post Office | Post Office | 387 | Belmont | 40 03 47 N | 081 04 29 W |
| Morrisville | Populated Place | 324 | Clinton | 39 21 19 N | 083 48 10 W |
| Morrisville Post Office (historical) | Post Office | 314 | Clinton | 39 31 20 N | 083 48 10 W |
| Morrow | Populated Place | 195 | Warren | 39 21 16 N | 084 07 38 W |
| Morrow Cemetery | Cemetery | 329 | Guernsey | 40 06 14 N | 081 42 34 W |
| Morrow Cemetery | Cemetery | 209 | Warren | 39 21 03 N | 084 07 27 W |
| Morrow Church of the Nazarene | Church | 196 | Warren | 39 21 09 N | 084 07 39 W |
| Morrow County | Civil | 364 | Morrow | 40 32 00 N | 082 47 00 W |
| Morrow County Airport | Airport | 330 | Morrow | 40 31 28 N | 082 50 60 W |
| Morrow County Courthouse | Building | 344 | Morrow | 40 32 58 N | 082 49 42 W |
| Morrow County Fairgrounds | Locale | 324 | Morrow | 40 32 35 N | 082 49 58 W |
| Morrow County Home | Building | 366 | Morrow | 40 33 53 N | 082 48 18 W |
| Morrow County Hospital | Hospital | 329 | Morrow | 40 32 53 N | 082 51 02 W |
| Morrow Elementary School | School | 198 | Warren | 39 21 10 N | 084 07 56 W |
| Morrow United Methodist Church | Church | 216 | Warren | 39 21 01 N | 084 08 12 W |
| Morse Center Shopping Center | Locale | 269 | Franklin | 40 03 40 N | 082 57 36 W |
| Morse Chapel | Church | 216 | Meigs | 38 59 35 N | 081 50 20 W |
| Morse Pond | Reservoir | 319 | Fairfield | 39 46 18 N | 082 44 54 W |
| Morse Pond Dam | Dam | 319 | Fairfield | 39 46 18 N | 082 44 54 W |
| Morse-Lewis Cemetery | Cemetery | 280 | Hocking | 39 24 07 N | 082 20 31 W |
| Mortimer | Populated Place | 245 | Hancock | 41 06 34 N | 083 39 01 W |
| Mortimer Post Office (historical) | Post Office | 245 | Hancock | 41 06 35 N | 083 38 60 W |
| Morton | Populated Place | 400 | Monroe | 39 40 24 N | 080 56 59 W |
| Morton Cemetery | Cemetery | 356 | Geauga | 41 26 05 N | 081 15 45 W |
| Morton Flats | Populated Place | 197 | Gallia | 38 49 44 N | 082 15 50 W |
| Morton Hall | Building | 195 | Athens | 39 19 27 N | 082 05 51 W |
| Morton Junior High School | School | 301 | Montgomery | 39 53 26 N | 084 12 09 W |
| Morton Post Office (historical) | Post Office | 401 | Monroe | 39 40 25 N | 080 56 59 W |
| Morton Ridge Church | Church | 402 | Monroe | 39 39 54 N | 080 56 58 W |
| Morton School (historical) | School | 338 | Miami | 40 06 45 N | 084 03 29 W |
| Morton School (historical) | School | 342 | Ross | 39 19 00 N | 083 16 51 W |
| Mortus Park | Park | 332 | Summit | 41 19 47 N | 081 28 32 W |
| Moscow | Populated Place | 152 | Clermont | 38 51 25 N | 084 13 45 W |
| Moscow (historical) | Populated Place | 272 | Licking | 39 57 40 N | 082 28 04 W |
| Moscow Brook | Stream | | Coshocton | 40 11 19 N | 081 58 55 W |
| Moscow Cemetery | Cemetery | 209 | Clermont | 38 51 37 N | 084 12 42 W |
| Moscow Mills | Populated Place | 207 | Morgan | 39 36 10 N | 081 37 32 W |
| Moscow Mills Post Office (historical) | Post Office | 196 | Morgan | 39 36 10 N | 081 37 34 W |
| Moscow Post Office | Post Office | 152 | Clermont | 38 51 25 N | 084 13 45 W |
| Moscow School (historical) | School | 264 | Morgan | 39 36 37 N | 081 37 30 W |
| Moseley Channel | Channel | 174 | Erie | 41 29 30 N | 082 41 50 W |
| Moseley Channel Range Lights | Locale | 174 | Erie | 41 29 11 N | 082 42 12 W |
| Moseley Hall | Building | 210 | Wood | 41 22 36 N | 083 38 23 W |
| Moses Cleaveland Elementary School | School | 283 | Cuyahoga | 41 26 53 N | 081 34 50 W |
| Moses Cleveland Landing | Locale | 176 | Cuyahoga | 41 29 47 N | 081 42 04 W |
| Moses Coblentz Farm Cemetery | Cemetery | 366 | Holmes | 40 33 13 N | 081 50 37 W |
| Moses J Miller Farm Cemetery | Cemetery | 355 | Holmes | 40 35 27 N | 081 43 48 W |
| Moses Miller Farm Cemetery | Cemetery | 347 | Holmes | 40 30 42 N | 081 48 00 W |
| Mosher Cemetery | Cemetery | 318 | Morrow | 40 30 56 N | 082 51 41 W |
| Mosher School (historical) | School | 338 | Holmes | 40 34 55 N | 082 12 27 W |
| Mosher School (historical) | School | 196 | Pike | 39 01 06 N | 082 50 52 W |
| Mosier Lake | Reservoir | 238 | Hancock | 41 08 27 N | 083 25 35 W |
| Mosier School (historical) | School | 268 | Mercer | 40 33 33 N | 084 33 04 W |
| Mosier School (historical) | School | 251 | Van Wert | 40 46 18 N | 084 47 14 W |
| Mosquito Creek | Stream | | Lucas | 41 29 55 N | 083 47 44 W |
| Mosquito Creek | Stream | | Shelby | 40 15 55 N | 084 05 18 W |
| Mosquito Creek | Stream | | Trumbull | 41 10 37 N | 080 45 44 W |
| Mosquito Creek | Stream | | Trumbull | 41 10 42 N | 080 45 45 W |
| Mosquito Creek Dam | Dam | 277 | Trumbull | 41 18 00 N | 080 45 24 W |
| Mosquito Creek Lake | Reservoir | 277 | Trumbull | 41 18 00 N | 080 45 24 W |
| Mosquito Creek State Park | Park | 276 | Trumbull | 41 20 10 N | 080 46 04 W |
| Mosquito Creek State Wildlife Area | Park | 278 | Trumbull | 41 26 03 N | 080 47 24 W |
| Mosquito Lake Bog (historical) | Swamp | 323 | Champaign | 40 11 00 N | 083 57 15 W |
| Moss Beach Club Lake | Reservoir | 324 | Geauga | 41 22 12 N | 081 03 59 W |
| Moss Cemetery | Cemetery | 280 | Athens | 39 21 38 N | 081 54 32 W |
| Moss Creek | Stream | | Montgomery | 39 48 44 N | 084 19 27 W |
| Moss Hollow | Valley | | Ross | 39 15 37 N | 082 58 00 W |
| Moss Point | Cliff | 183 | Cuyahoga | 41 36 54 N | 081 31 34 W |
| Moss Run | Populated Place | 210 | Washington | 39 28 25 N | 081 18 53 W |
| Moss Run | Stream | | Belmont | 40 01 32 N | 080 47 44 W |
| Moss Run | Stream | | Paulding | 41 09 58 N | 084 30 46 W |
| Moss Run | Stream | | Washington | 39 27 38 N | 081 19 32 W |
| Moss Run Cemetery | Cemetery | 231 | Washington | 39 27 45 N | 081 19 16 W |
| Moss Run Church | Church | 190 | Washington | 39 27 42 N | 081 19 26 W |
| Most Holy Trinity Byzantine Catholic Church | Church | 213 | Cuyahoga | 41 29 13 N | 081 37 18 W |
| Most Pure Heart of Mary Catholic Church | Church | 336 | Richland | 40 52 58 N | 082 40 02 W |
| Mote Cemetery | Cemetery | 309 | Darke | 39 59 25 N | 084 27 20 W |