Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Royer Chapel | Church | 246 | Coshocton | 40 11 06 N | 081 49 53 W |
| Royer Ditch | Canal | 242 | Seneca | 41 13 14 N | 082 54 42 W |
| Royers Chapel Cemetery | Cemetery | 244 | Coshocton | 40 11 06 N | 081 49 54 W |
| Royersville | Populated Place | 201 | Lawrence | 38 36 38 N | 082 40 38 W |
| Royersville Church | Church | 202 | Lawrence | 38 36 49 N | 082 40 15 W |
| Royston School (historical) | School | 247 | Van Wert | 40 45 01 N | 084 44 46 W |
| Rozelle Creek | Stream | | Ross | 39 14 48 N | 082 59 02 W |
| Rozelle Elementary School | School | 201 | Cuyahoga | 41 31 38 N | 081 35 36 W |
| Rube Hollow | Valley | | Adams | 38 41 17 N | 083 18 41 W |
| Rube School (historical) | School | 339 | Ross | 39 15 45 N | 083 06 07 W |
| Rubel Lake | Reservoir | 229 | Warren | 39 22 40 N | 084 18 06 W |
| Rubel School (historical) | School | 268 | Hocking | 39 34 59 N | 082 26 29 W |
| Rubicon Missionary Baptist Church | Church | 233 | Montgomery | 39 45 53 N | 084 13 18 W |
| Ruble Cemetery | Cemetery | 304 | Highland | 39 08 27 N | 083 48 09 W |
| Ruble Cemetery | Cemetery | 402 | Monroe | 39 50 01 N | 080 56 08 W |
| Ruble Knob | Summit | 319 | Fairfield | 39 41 34 N | 082 39 07 W |
| Ruble Run | Stream | | Highland | 39 04 29 N | 083 50 44 W |
| Rubsam Mills (historical) | Locale | 287 | Clark | 39 55 10 N | 083 51 22 W |
| Ruby (historical) | Populated Place | 311 | Gallia | 38 40 43 N | 082 20 01 W |
| Ruby Lake | Lake | 338 | Logan | 40 18 13 N | 083 48 09 W |
| Ruby Post Office (historical) | Post Office | 317 | Gallia | 38 40 45 N | 082 19 60 W |
| Rubyville | Populated Place | 209 | Scioto | 38 49 30 N | 082 55 48 W |
| Rubyville Community Church | Church | 230 | Scioto | 38 49 38 N | 082 55 38 W |
| Rubyville Elementary School | School | 235 | Scioto | 38 49 13 N | 082 56 18 W |
| Rucker Cemetery | Cemetery | 252 | Lawrence | 38 37 23 N | 082 24 55 W |
| Rucker Cemetery | Cemetery | 307 | Lawrence | 38 38 34 N | 082 34 04 W |
| Rucker Cemetery | Cemetery | 299 | Lawrence | 38 37 52 N | 082 24 56 W |
| Rudolph | Populated Place | 210 | Wood | 41 17 52 N | 083 40 12 W |
| Rudolph Post Office | Post Office | 210 | Wood | 41 17 52 N | 083 40 12 W |
| Rudy Ditch | Canal | 292 | Miami | 40 10 55 N | 084 20 44 W |
| Ruehrmond Ditch | Canal | 300 | Marion | 40 31 37 N | 082 59 16 W |
| Ruff Cemetery | Cemetery | 319 | Hocking | 39 37 02 N | 082 26 52 W |
| Ruff Memorial Learning Center | Building | 238 | Franklin | 39 57 21 N | 082 56 12 W |
| Ruffner Cemetery | Cemetery | 288 | Fairfield | 39 46 17 N | 082 28 22 W |
| Ruffner Monument | Park | 317 | Ashland | 40 45 04 N | 082 21 13 W |
| Ruffner Run | Stream | | Ashland | 40 46 24 N | 082 22 27 W |
| Rugby (historical) | Populated Place | 207 | Lorain | 41 22 46 N | 082 19 02 W |
| Rugby Cemetery | Cemetery | 223 | Lorain | 41 22 32 N | 082 19 40 W |
| Rugby Post Office (historical) | Post Office | 205 | Lorain | 41 22 45 N | 082 18 60 W |
| Rugged Hill School (historical) | School | 302 | Miami | 40 03 33 N | 084 06 05 W |
| Ruggles | Populated Place | 335 | Ashland | 41 01 46 N | 082 23 33 W |
| Ruggles Beach | Populated Place | 180 | Erie | 41 22 55 N | 082 28 31 W |
| Ruggles Cemetery | Cemetery | 210 | Huron | 41 15 59 N | 082 39 26 W |
| Ruggles Elementary School | School | 334 | Ashland | 41 01 48 N | 082 23 18 W |
| Ruggles Post Office (historical) | Post Office | 335 | Ashland | 41 01 45 N | 082 23 30 W |
| Ruggles Township Cemetery | Cemetery | 327 | Ashland | 41 01 44 N | 082 24 04 W |
| Ruhes Airport | Airport | 228 | Putnam | 41 06 11 N | 084 03 07 W |
| Ruhl Cemetery | Cemetery | 353 | Knox | 40 31 00 N | 082 35 49 W |
| Ruhl Ridge | Ridge | 200 | Sandusky | 41 22 12 N | 083 10 53 W |
| Ruhlin Airport | Airport | 315 | Medina | 41 05 11 N | 081 43 45 W |
| Ruhlin Heliport | Airport | 315 | Medina | 41 05 11 N | 081 43 45 W |
| Ruhm Ditch | Canal | 201 | Lucas | 41 29 10 N | 083 50 04 W |
| Ruihley Park | Park | 221 | Fulton | 41 31 25 N | 084 18 45 W |
| Ruly School (historical) | School | 296 | Ross | 39 12 28 N | 083 06 38 W |
| Rum Creek | Stream | | Logan | 40 22 25 N | 083 55 54 W |
| Rum Creek Church | Church | 306 | Logan | 40 23 26 N | 083 59 09 W |
| Rumbaugh Cemetery | Cemetery | 366 | Wayne | 40 52 48 N | 082 03 13 W |
| Rumley | Populated Place | 296 | Shelby | 40 24 49 N | 084 14 36 W |
| Rumley Post Office (historical) | Post Office | 296 | Shelby | 40 24 50 N | 084 14 35 W |
| Runaway School (historical) | School | 335 | Licking | 40 14 11 N | 082 34 16 W |
| Runk Cemetery | Cemetery | 320 | Highland | 39 14 46 N | 083 46 03 W |
| Runyan Cemetery | Cemetery | 222 | Hamilton | 39 17 17 N | 084 23 43 W |
| Runyan Cemetery | Cemetery | 259 | Warren | 39 18 05 N | 084 05 18 W |
| Runyan Field | Park | 215 | Warren | 39 25 53 N | 084 12 18 W |
| Runyan School | School | 233 | Hamilton | 39 17 25 N | 084 23 39 W |
| Rupel School (historical) | School | 194 | Ross | 39 14 35 N | 082 50 05 W |
| Rupels | Populated Place | 195 | Ross | 39 15 07 N | 082 52 14 W |
| Rupert | Populated Place | 294 | Madison | 39 52 57 N | 083 21 12 W |
| Rupert Cemetery | Cemetery | 306 | Auglaize | 40 29 55 N | 084 09 42 W |
| Rupert Post Office (historical) | Post Office | 294 | Madison | 39 52 55 N | 083 21 10 W |
| Rupp Cemetery | Cemetery | 319 | Crawford | 40 51 00 N | 082 54 48 W |
| Rupp Cemetery | Cemetery | 224 | Fulton | 41 30 50 N | 084 16 39 W |
| Rupp Cemetery | Cemetery | 198 | Lucas | 41 31 56 N | 083 47 10 W |
| Rupp Cemetery | Cemetery | 294 | Marion | 40 30 55 N | 083 05 46 W |
| Rupp Landing | Locale | 211 | Williams | 41 29 59 N | 084 25 48 W |
| Ruppert Cemetery | Cemetery | 224 | Fulton | 41 32 04 N | 084 05 15 W |
| Rural | Populated Place | 151 | Clermont | 38 46 42 N | 084 05 22 W |
| Rural Cemetery | Cemetery | 153 | Clermont | 38 47 00 N | 084 05 24 W |
| Rural Chapel | Church | 237 | Muskingum | 39 57 29 N | 081 59 12 W |
| Rural Home Farm (historical) | Locale | 330 | Knox | 40 28 13 N | 082 32 60 W |
| Rural Home School (historical) | School | 274 | Greene | 39 41 08 N | 083 59 44 W |
| Rural Post Office (historical) | Post Office | 149 | Clermont | 38 46 40 N | 084 05 20 W |
| Rural Vale Farm (historical) | Locale | 291 | Licking | 40 05 49 N | 082 20 33 W |
| Ruraldale | Populated Place | 323 | Muskingum | 39 46 55 N | 081 50 37 W |
| Ruraldale (subdivision) | Populated Place | 238 | Washington | 39 25 59 N | 081 26 26 W |
| Ruraldale Cemetery | Cemetery | 345 | Muskingum | 39 46 29 N | 081 50 26 W |
| Ruraldale Post Office (historical) | Post Office | 328 | Muskingum | 39 46 55 N | 081 50 39 W |
| Ruraldale School (historical) | School | 221 | Washington | 39 34 45 N | 081 40 54 W |
| Rush | Populated Place | 267 | Tuscarawas | 40 18 38 N | 081 22 04 W |
| Rush Cemetery | Cemetery | 273 | Athens | 39 27 27 N | 082 08 58 W |
| Rush Cemetery | Cemetery | 306 | Marion | 40 39 29 N | 082 58 46 W |
| Rush Church | Church | 189 | Scioto | 38 51 45 N | 083 03 41 W |
| Rush Community Cemetery | Cemetery | 268 | Tuscarawas | 40 18 39 N | 081 22 07 W |
| Rush Community Church | Church | 272 | Tuscarawas | 40 18 41 N | 081 22 06 W |
| Rush Creek | Stream | | Fairfield | 39 37 20 N | 082 32 56 W |
| Rush Creek | Stream | | Marion | 40 33 51 N | 083 19 36 W |
| Rush Creek | Stream | | Shelby | 40 09 11 N | 084 14 08 W |
| Rush Creek Commerce Center | Locale | 280 | Franklin | 40 06 30 N | 083 00 07 W |
| Rush Creek Conservancy Structure 1B Dam | Dam | 283 | Perry | 39 44 48 N | 082 13 54 W |
| Rush Creek Conservation District Structure 5a Dam | Dam | 244 | Fairfield | 39 44 12 N | 082 22 24 W |
| Rush Creek Conservation District Structure 5b Dam | Dam | 255 | Fairfield | 39 44 18 N | 082 23 30 W |
| Rush Creek Conservation District Structure 5b Reservoir | Reservoir | 255 | Fairfield | 39 44 18 N | 082 23 30 W |
| Rush Creek Conservation District Structure 5c Dam | Dam | 251 | Fairfield | 39 44 24 N | 082 24 36 W |
| Rush Creek Conservation District Structure 6d Dam | Dam | 271 | Fairfield | 39 48 30 N | 082 26 54 W |
| Rush Creek Conservation District Structure 7d Dam | Dam | 256 | Fairfield | 39 42 00 N | 082 30 30 W |
| Rush Creek Conservation District Structure 7e Dam | Dam | 253 | Fairfield | 39 41 12 N | 082 28 54 W |
| Rush Creek Conservation District Structure Reservoir | Reservoir | 244 | Fairfield | 39 44 12 N | 082 22 24 W |
| Rush Creek Conservation District Structure Reservoir | Reservoir | 251 | Fairfield | 39 44 24 N | 082 24 36 W |
| Rush Creek Conservation District Structure Reservoir | Reservoir | 256 | Fairfield | 39 42 00 N | 082 30 30 W |
| Rush Creek Conservation District Structure Reservoir | Reservoir | 253 | Fairfield | 39 41 12 N | 082 28 54 W |