Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Robinson Cemetery | Cemetery | 293 | Union | 40 09 06 N | 083 22 57 W |
| Robinson Ditch | Canal | 279 | Madison | 39 46 23 N | 083 16 30 W |
| Robinson Elementary School | School | 323 | Summit | 41 03 42 N | 081 29 18 W |
| Robinson Field | Park | 310 | Hardin | 40 39 05 N | 083 35 53 W |
| Robinson G Jones Elementary School | School | 238 | Cuyahoga | 41 25 48 N | 081 48 08 W |
| Robinson Hall | Building | 317 | Clinton | 39 26 30 N | 083 49 07 W |
| Robinson Junior High School | School | 187 | Lucas | 41 39 39 N | 083 34 03 W |
| Robinson Laboratory | Building | 230 | Franklin | 40 00 08 N | 083 00 51 W |
| Robinson Memorial Hospital | Hospital | 339 | Portage | 41 09 09 N | 081 14 39 W |
| Robinson Memorial Hospital Heliport | Airport | 343 | Portage | 41 10 35 N | 081 14 57 W |
| Robinson Run | Stream | | Belmont | 40 05 05 N | 081 10 11 W |
| Robinson Run | Stream | | Coshocton | 40 12 11 N | 081 52 15 W |
| Robinson Run | Stream | | Gallia | 38 59 44 N | 082 20 12 W |
| Robinson Run | Stream | | Monroe | 39 45 27 N | 081 17 05 W |
| Robinson Run | Stream | | Richland | 40 35 41 N | 082 29 37 W |
| Robinson Run | Stream | | Summit | 41 12 30 N | 081 33 46 W |
| Robinson Run | Stream | | Union | 40 07 09 N | 083 15 60 W |
| Robinson School (historical) | School | 243 | Coshocton | 40 12 40 N | 081 51 29 W |
| Robinson School (historical) | School | 233 | Fulton | 41 40 38 N | 084 03 19 W |
| Robinson School (historical) | School | 251 | Mercer | 40 39 17 N | 084 42 32 W |
| Robinson School (historical) | School | 237 | Van Wert | 40 53 16 N | 084 40 03 W |
| Robinsons Opera House (historical) | Building | 167 | Hamilton | 39 06 17 N | 084 31 07 W |
| Robinwood Lane Elementary School | School | 342 | Mahoning | 41 02 44 N | 080 38 21 W |
| Robison Hollow | Valley | | Hocking | 39 27 58 N | 082 32 14 W |
| Robison School (historical) | School | 272 | Pickaway | 39 42 25 N | 083 14 18 W |
| Robson Ditch | Canal | 241 | Lorain | 41 17 24 N | 082 03 35 W |
| Robtown | Populated Place | 238 | Pickaway | 39 43 01 N | 083 03 36 W |
| Robtown Post Office (historical) | Post Office | 238 | Pickaway | 39 43 00 N | 083 03 35 W |
| Roby Cemetery | Cemetery | 332 | Carroll | 40 30 10 N | 081 14 17 W |
| Robyville | Populated Place | 285 | Jefferson | 40 12 25 N | 080 52 45 W |
| Robyville Number 80 Drift Number 2 Mine | Mine | 360 | Harrison | 40 11 40 N | 080 53 34 W |
| Roche de Boeuf | Island | 185 | Lucas | 41 29 12 N | 083 43 46 W |
| Roche Memorial Hospital | Hospital | 189 | Lucas | 41 37 14 N | 083 35 50 W |
| Rochester | Populated Place | 283 | Lorain | 41 07 35 N | 082 18 19 W |
| Rochester | Populated Place | 313 | Noble | 39 49 51 N | 081 31 24 W |
| Rochester Cemetery | Cemetery | 292 | Lorain | 41 06 13 N | 082 18 04 W |
| Rochester Cemetery | Cemetery | 217 | Paulding | 41 13 53 N | 084 35 29 W |
| Rochester Post Office (historical) | Post Office | 283 | Lorain | 41 07 35 N | 082 18 20 W |
| Rochester Station Cemetery | Cemetery | 283 | Lorain | 41 07 43 N | 082 18 28 W |
| Rochester Township Hall | Building | 284 | Lorain | 41 07 31 N | 082 18 15 W |
| Rock | Populated Place | 265 | Tuscarawas | 40 18 18 N | 081 21 43 W |
| Rock and Roll Hall of Fame | Building | 181 | Cuyahoga | 41 30 30 N | 081 41 39 W |
| Rock Bluff | Cliff | 203 | Washington | 39 14 05 N | 081 41 34 W |
| Rock Camp | Populated Place | 311 | Columbiana | 40 41 38 N | 080 39 45 W |
| Rock Camp | Populated Place | 185 | Lawrence | 38 31 47 N | 082 32 55 W |
| Rock Camp Post Office | Post Office | 188 | Lawrence | 38 31 45 N | 082 32 55 W |
| Rock Camp Post Office (historical) | Post Office | 307 | Columbiana | 40 41 40 N | 080 39 44 W |
| Rock Canyon Park | Populated Place | 298 | Carroll | 40 27 23 N | 081 09 52 W |
| Rock Creek | Populated Place | 245 | Ashtabula | 41 39 37 N | 080 51 38 W |
| Rock Creek | Stream | | Ashtabula | 41 39 17 N | 080 52 20 W |
| Rock Creek | Stream | | Belmont | 39 51 23 N | 081 14 14 W |
| Rock Creek | Stream | | Seneca | 41 07 04 N | 083 10 38 W |
| Rock Creek Cemetery | Cemetery | 250 | Seneca | 41 04 01 N | 083 05 41 W |
| Rock Creek Cemetery | Cemetery | 245 | Seneca | 41 04 41 N | 083 07 56 W |
| Rock Creek Elementary School | School | 248 | Ashtabula | 41 39 47 N | 080 51 29 W |
| Rock Creek Post Office | Post Office | 244 | Ashtabula | 41 39 35 N | 080 51 39 W |
| Rock Creek Station (historical) | Locale | 257 | Ashtabula | 41 39 43 N | 080 50 45 W |
| Rock Cut | Populated Place | 217 | Muskingum | 40 04 04 N | 081 58 35 W |
| Rock Fork | Stream | | Marion | 40 38 13 N | 083 09 31 W |
| Rock Haven Park | Populated Place | 257 | Franklin | 40 03 23 N | 082 13 46 W |
| Rock Hill | Populated Place | 391 | Belmont | 40 08 20 N | 081 06 18 W |
| Rock Hill | Summit | 354 | Ross | 39 24 09 N | 082 47 09 W |
| Rock Hill Cemetery | Cemetery | 362 | Belmont | 40 01 53 N | 080 46 58 W |
| Rock Hill Church | Church | 396 | Belmont | 40 02 15 N | 080 46 22 W |
| Rock Hill High School | School | 216 | Lawrence | 38 36 52 N | 082 39 51 W |
| Rock Hill Number 3 Elementary School | School | 215 | Lawrence | 38 36 50 N | 082 39 41 W |
| Rock Hill Number 4 Elementary School | School | 166 | Lawrence | 38 33 38 N | 082 43 14 W |
| Rock Hill School | School | 179 | Lawrence | 38 32 52 N | 082 36 57 W |
| Rock Hollow | Valley | | Belmont | 39 55 58 N | 080 51 00 W |
| Rock Hollow School (historical) | School | 281 | Morgan | 39 33 42 N | 081 58 50 W |
| Rock House Lookout Tower | Tower | 343 | Hocking | 39 29 44 N | 082 36 47 W |
| Rock House of Jesus Church | Church | 333 | Summit | 41 02 45 N | 081 26 14 W |
| Rock Island Lake | Reservoir | 300 | Mahoning | 41 04 18 N | 080 37 41 W |
| Rock Island Lake Dam | Dam | 300 | Mahoning | 41 04 18 N | 080 37 41 W |
| Rock Lick | Stream | | Highland | 39 03 16 N | 083 31 03 W |
| Rock Lick | Stream | | Scioto | 38 41 47 N | 083 10 26 W |
| Rock Lick | Stream | | Scioto | 38 44 52 N | 083 12 36 W |
| Rock Lick Hollow | Valley | | Scioto | 38 44 46 N | 083 09 10 W |
| Rock Mill | Populated Place | 304 | Fairfield | 39 44 58 N | 082 42 45 W |
| Rock Mill Bridge | Bridge | 294 | Fairfield | 39 44 56 N | 082 42 49 W |
| Rock Mill Dam State Wildlife Area | Park | 281 | Fairfield | 39 44 25 N | 082 42 08 W |
| Rock Mill Lake | Reservoir | 269 | Fairfield | 39 44 18 N | 082 41 42 W |
| Rock Mills | Populated Place | 280 | Fayette | 39 26 35 N | 083 24 33 W |
| Rock Mills Cemetery | Cemetery | 301 | Fayette | 39 26 27 N | 083 24 06 W |
| Rock Mills School (historical) | School | 308 | Fayette | 39 26 25 N | 083 23 45 W |
| Rock of Faith Baptist Church | Church | 233 | Franklin | 39 57 27 N | 082 57 20 W |
| Rock Point School (historical) | School | 272 | Holmes | 40 38 48 N | 081 53 18 W |
| Rock Post Office (historical) | Post Office | 275 | Tuscarawas | 40 18 20 N | 081 21 44 W |
| Rock Ridge School | School | 340 | Coshocton | 40 25 49 N | 081 44 41 W |
| Rock Ridge School (historical) | School | 319 | Coshocton | 40 23 55 N | 082 00 37 W |
| Rock Run | Stream | | Adams | 38 36 56 N | 083 16 12 W |
| Rock Run | Stream | | Clark | 39 55 21 N | 083 52 10 W |
| Rock Run | Stream | | Coshocton | 40 13 38 N | 081 51 54 W |
| Rock Run | Stream | | Meigs | 39 02 23 N | 081 47 33 W |
| Rock Run | Stream | | Meigs | 39 07 38 N | 081 44 43 W |
| Rock Run | Stream | | Pike | 38 58 24 N | 083 09 49 W |
| Rock Run | Stream | | Wyandot | 40 51 16 N | 083 14 40 W |
| Rock Run Cemetery | Cemetery | 264 | Wyandot | 40 49 18 N | 083 13 21 W |
| Rock Run Creek | Stream | | Jackson | 39 05 19 N | 082 39 58 W |
| Rock Spring Cemetery | Cemetery | 288 | Muskingum | 39 55 38 N | 081 48 25 W |
| Rock Spring School (historical) | School | 342 | Pike | 39 04 49 N | 082 54 12 W |
| Rock Springs | Populated Place | 194 | Meigs | 39 03 36 N | 082 00 58 W |
| Rock Springs Cemetery | Cemetery | 210 | Meigs | 39 03 31 N | 082 01 13 W |
| Rock Springs Post Office (historical) | Post Office | 199 | Meigs | 39 03 35 N | 082 00 60 W |
| Rock Springs United Methodist Church | Church | 189 | Meigs | 39 03 50 N | 082 01 03 W |
| Rock Swale | Stream | | Marion | 40 35 33 N | 083 11 01 W |
| Rock Valley School (historical) | School | 268 | Coshocton | 40 25 41 N | 081 49 17 W |
| Rock Way | Populated Place | 314 | Clark | 39 55 39 N | 083 52 43 W |
| Rockaway | Populated Place | 265 | Seneca | 41 04 59 N | 083 03 15 W |
| Rockaway Post Office (historical) | Post Office | 264 | Seneca | 41 05 00 N | 083 03 17 W |