Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Muskingum (historical) | Populated Place | 212 | Washington | 39 33 20 N | 081 13 20 W |
| Muskingum College | School | 289 | Muskingum | 39 59 49 N | 081 44 15 W |
| Muskingum College Campus Historic District | Park | 286 | Muskingum | 39 59 46 N | 081 44 12 W |
| Muskingum County | Civil | 264 | Muskingum | 39 57 00 N | 081 56 59 W |
| Muskingum County Courthouse | Building | 219 | Muskingum | 39 56 25 N | 082 00 26 W |
| Muskingum County Home | Building | 232 | Muskingum | 39 57 31 N | 082 01 52 W |
| Muskingum County Law Library | Building | 219 | Muskingum | 39 56 25 N | 082 00 26 W |
| Muskingum County Technical College | School | 230 | Muskingum | 39 57 43 N | 082 01 59 W |
| Muskingum Park | Park | 184 | Washington | 39 24 58 N | 081 27 29 W |
| Muskingum Post Office (historical) | Post Office | 227 | Muskingum | 38 53 35 N | 082 01 20 W |
| Muskingum Presbyterian Cemetery | Cemetery | 293 | Muskingum | 40 03 11 N | 082 04 06 W |
| Muskingum Presbyterian Church | Church | 299 | Muskingum | 40 03 10 N | 082 04 01 W |
| Muskingum River | Stream | | Washington | 39 24 33 N | 081 27 22 W |
| Muskingum River Fly Ash Dam | Dam | 246 | Washington | 39 34 36 N | 081 40 53 W |
| Muskingum River Fly Ash Reservoir | Reservoir | 246 | Washington | 39 34 36 N | 081 40 53 W |
| Muskingum River Lock and Dam Number | Reservoir | 195 | Morgan | 39 32 48 N | 081 47 17 W |
| Muskingum River Lock and Dam Number | Reservoir | 240 | Morgan | 39 38 30 N | 081 50 59 W |
| Muskingum River Lock and Dam Number | Reservoir | 206 | Morgan | 39 44 00 N | 081 54 29 W |
| Muskingum River Lock and Dam Number | Reservoir | 205 | Muskingum | 39 52 12 N | 081 54 35 W |
| Muskingum River Lock and Dam Number | Reservoir | 206 | Muskingum | 39 56 30 N | 082 00 47 W |
| Muskingum River Lock and Dam Number | Reservoir | 213 | Muskingum | 40 02 36 N | 081 58 41 W |
| Muskingum River Lock and Dam Number | Reservoir | 178 | Washington | 39 28 12 N | 081 29 29 W |
| Muskingum River Lock and Dam Number | Reservoir | 182 | Washington | 39 31 48 N | 081 30 59 W |
| Muskingum River Lock and Dam Number | Reservoir | 185 | Washington | 39 33 18 N | 081 38 47 W |
| Muskingum River Lock and Dam Number | Reservoir | 189 | Washington | 39 32 12 N | 081 43 17 W |
| Muskingum River Lock and Dam Number 10 | Dam | 206 | Muskingum | 39 56 30 N | 082 00 47 W |
| Muskingum River Lock and Dam Number 11 | Dam | 213 | Muskingum | 40 02 36 N | 081 58 41 W |
| Muskingum River Lock and Dam Number Eight | Dam | 206 | Morgan | 39 44 00 N | 081 54 29 W |
| Muskingum River Lock and Dam Number Five | Dam | 189 | Washington | 39 32 12 N | 081 43 17 W |
| Muskingum River Lock and Dam Number Four | Dam | 185 | Washington | 39 33 18 N | 081 38 47 W |
| Muskingum River Lock and Dam Number Nine | Dam | 205 | Muskingum | 39 52 12 N | 081 54 35 W |
| Muskingum River Lock and Dam Number Seven | Dam | 240 | Morgan | 39 38 30 N | 081 50 59 W |
| Muskingum River Lock and Dam Number Six | Dam | 195 | Morgan | 39 32 48 N | 081 47 17 W |
| Muskingum River Lock and Dam Number Three | Dam | 182 | Washington | 39 31 48 N | 081 30 59 W |
| Muskingum River Lock and Dam Number Two | Dam | 178 | Washington | 39 28 12 N | 081 29 29 W |
| Muskingum River Parkway State Park | Park | 205 | Morgan | 39 38 36 N | 081 51 04 W |
| Muskingum River Parkway State Park | Park | 235 | Muskingum | 40 02 32 N | 081 58 35 W |
| Muskingum Terrace (subdivision) | Populated Place | 195 | Washington | 39 26 38 N | 081 27 21 W |
| Muskingum Valley Baptist Cemetery | Cemetery | 212 | Washington | 39 32 12 N | 081 12 49 W |
| Muskingum Valley Church | Church | 214 | Washington | 39 32 13 N | 081 12 48 W |
| Muskingum Watershed Conservancy District | Area | 279 | Harrison | 40 20 12 N | 081 07 02 W |
| Muskrat Ditch | Canal | 299 | Marion | 40 36 43 N | 082 59 35 W |
| Muskrat Hollow | Valley | | Jackson | 39 12 18 N | 082 42 34 W |
| Musselman | Populated Place | 213 | Ross | 39 22 05 N | 083 08 33 W |
| Musselman Hall | Building | 344 | Portage | 41 08 32 N | 081 20 13 W |
| Musselman Library | Building | 248 | Allen | 40 53 41 N | 083 53 58 W |
| Musselman Post Office | Post Office | 211 | Ross | 39 22 05 N | 083 08 35 W |
| Mustapha Island Bridge | Arch | 184 | Athens | 39 12 51 N | 081 43 44 W |
| Mustard Cemetery | Cemetery | 211 | Pike | 39 03 31 N | 083 09 11 W |
| Mustard Cemetery | Cemetery | 207 | Scioto | 38 57 23 N | 083 15 36 W |
| Mustard Hill | Summit | 356 | Scioto | 38 58 04 N | 083 15 46 W |
| Mustard School (historical) | School | 290 | Hardin | 40 44 50 N | 083 47 04 W |
| Mustard Seed Church | Church | 229 | Franklin | 39 55 53 N | 082 59 04 W |
| Mutton Hollow | Valley | | Belmont | 40 04 24 N | 080 46 53 W |
| Mutton Run | Stream | | Butler | 39 27 30 N | 084 32 49 W |
| Mutton Run | Stream | | Monroe | 39 42 49 N | 080 58 52 W |
| Mutton Run | Stream | | Pike | 39 09 55 N | 082 50 42 W |
| Muttonville | Populated Place | 290 | Preble | 39 39 29 N | 084 41 09 W |
| Muttonville Cemetery | Cemetery | 302 | Preble | 39 39 36 N | 084 41 19 W |
| Mutual | Populated Place | 364 | Champaign | 40 04 43 N | 083 38 13 W |
| Mutual Post Office (historical) | Post Office | 360 | Champaign | 40 04 45 N | 083 38 15 W |
| Muzzy Lake | Lake | 322 | Portage | 41 07 03 N | 081 15 05 W |
| Muzzys Lake | Lake | 301 | Champaign | 40 06 10 N | 083 47 01 W |
| Myers | Populated Place | 334 | Stark | 40 46 16 N | 081 07 57 W |
| Myers (historical) | Populated Place | 346 | Madison | 39 53 25 N | 083 31 45 W |
| Myers (historical) | Populated Place | 353 | Richland | 40 50 35 N | 082 37 23 W |
| Myers Alumni Center | Building | 232 | Hamilton | 39 08 01 N | 084 30 53 W |
| Myers Cemetery | Cemetery | 323 | Clark | 39 58 08 N | 083 57 04 W |
| Myers Cemetery | Cemetery | 216 | Defiance | 41 13 01 N | 084 20 07 W |
| Myers Cemetery | Cemetery | 279 | Fairfield | 39 41 28 N | 082 30 59 W |
| Myers Cemetery | Cemetery | 301 | Preble | 39 46 39 N | 084 33 29 W |
| Myers Cemetery | Cemetery | 219 | Putnam | 41 03 06 N | 084 09 15 W |
| Myers Cemetery | Cemetery | 219 | Putnam | 41 01 01 N | 084 17 15 W |
| Myers Cemetery | Cemetery | 341 | Richland | 40 52 47 N | 082 42 59 W |
| Myers Cemetery | Cemetery | 324 | Stark | 40 46 13 N | 081 33 15 W |
| Myers Cemetery | Cemetery | 203 | Wood | 41 21 43 N | 083 30 14 W |
| Myers Church | Church | 327 | Stark | 40 46 13 N | 081 33 19 W |
| Myers Corners | Locale | 221 | Putnam | 41 03 52 N | 084 09 36 W |
| Myers Corners | Populated Place | 365 | Knox | 40 17 25 N | 082 37 52 W |
| Myers Field | Park | 314 | Ashland | 40 52 08 N | 082 18 24 W |
| Myers Hall | Building | 352 | Ashland | 40 51 37 N | 082 19 16 W |
| Myers Hall | Building | 238 | Hancock | 41 03 17 N | 083 39 10 W |
| Myers Hollow | Valley | | Brown | 38 47 40 N | 083 52 17 W |
| Myers Hollow | Valley | | Pike | 39 00 56 N | 083 12 42 W |
| Myers Island | Island | 306 | Summit | 41 00 04 N | 081 32 55 W |
| Myers Knob | Summit | 366 | Jefferson | 40 28 17 N | 080 36 32 W |
| Myers Park | Park | 330 | Stark | 40 47 51 N | 081 23 45 W |
| Myers Residence Hall | Building | 293 | Clark | 39 55 58 N | 083 48 34 W |
| Myers Run | Stream | | Brown | 38 46 44 N | 083 50 49 W |
| Myers Run | Stream | | Brown | 38 52 27 N | 083 50 04 W |
| Myers School | School | 320 | Stark | 40 46 23 N | 081 33 14 W |
| Myers School (historical) | School | 267 | Clermont | 38 49 54 N | 084 04 08 W |
| Myers School (historical) | School | 322 | Greene | 39 39 55 N | 083 45 37 W |
| Myers School (historical) | School | 352 | Licking | 40 06 57 N | 082 44 21 W |
| Myers Valley | Valley | | Tuscarawas | 40 22 57 N | 081 25 38 W |
| Myersville | Populated Place | 329 | Summit | 40 58 34 N | 081 25 25 W |
| Myersville Post Office (historical) | Post Office | 330 | Summit | 40 58 35 N | 081 25 24 W |
| Myres Cemetery | Cemetery | 295 | Marion | 40 35 59 N | 083 22 49 W |
| Myrl H Shoemaker Center | Building | 246 | Hamilton | 39 07 52 N | 084 30 51 W |
| Myrtle Hill Cemetery | Cemetery | 253 | Medina | 41 15 18 N | 081 55 23 W |
| Myrtle Ridge | Ridge | 305 | Lawrence | 38 32 32 N | 082 30 19 W |
| Myrtle Ridge Baptist Cemetery | Cemetery | 287 | Lawrence | 38 33 03 N | 082 30 52 W |
| Myrtle Ridge Church | Church | 288 | Lawrence | 38 32 59 N | 082 30 41 W |
| Myrtle Tree Cemetery | Cemetery | 344 | Champaign | 40 07 14 N | 083 53 35 W |
| Myrtle Tree Church | Church | 345 | Champaign | 40 07 14 N | 083 53 41 W |
| Myser School (historical) | School | 324 | Coshocton | 40 21 44 N | 081 41 44 W |
| Mystic Lake | Reservoir | 287 | Preble | 39 39 30 N | 084 38 48 W |
| Mystic Lake Dam | Dam | 285 | Preble | 39 39 30 N | 084 38 48 W |
| N N A Cemetery | Cemetery | 332 | Knox | 40 19 16 N | 082 26 31 W |
| Nacco Slurry Refuse Disposal Dam | Dam | 328 | Belmont | 39 55 06 N | 080 59 35 W |