Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Curtis Run | Stream | 304 | Knox | 40 23 50 N | 082 28 08 W |
| Curtis School (historical) | School | 347 | Licking | 40 07 55 N | 082 36 52 W |
| Curtis School (historical) | School | 220 | Paulding | 41 14 33 N | 084 37 53 W |
| Curtis Union Cemetery | Cemetery | 270 | Miami | 39 56 43 N | 084 16 31 W |
| Cushing Run | Stream | | Washington | 39 33 58 N | 081 34 47 W |
| Cushwa Hall | Building | 277 | Mahoning | 41 06 20 N | 080 38 59 W |
| Custaloga (historical) | Populated Place | 296 | Wayne | 40 40 14 N | 082 04 22 W |
| Custar | Populated Place | 211 | Wood | 41 17 05 N | 083 50 40 W |
| Custar Post Office | Post Office | 212 | Wood | 41 17 00 N | 083 50 38 W |
| Custard Cemetery | Cemetery | 300 | Fairfield | 39 49 01 N | 082 25 23 W |
| Custenborder Field | Park | 286 | Shelby | 40 17 31 N | 084 08 45 W |
| Custers Point | Cape | 273 | Licking | 39 55 34 N | 082 27 48 W |
| Cut Rock | Gap | 317 | Scioto | 38 45 51 N | 083 06 33 W |
| Cutler | Populated Place | 246 | Washington | 39 21 15 N | 081 47 24 W |
| Cutler Cemetery | Cemetery | 209 | Athens | 39 24 58 N | 081 57 58 W |
| Cutler Chapel | Church | 214 | Washington | 39 20 57 N | 081 34 41 W |
| Cutler Elementary School | School | 248 | Washington | 39 21 11 N | 081 47 20 W |
| Cutler Hall | Building | 220 | Athens | 39 19 33 N | 082 06 02 W |
| Cutler Lake | Reservoir | 251 | Muskingum | 39 49 02 N | 081 51 02 W |
| Cutler School | School | 276 | Washington | 39 20 58 N | 081 47 47 W |
| Cutlipp Hollow | Valley | | Scioto | 38 43 10 N | 083 08 47 W |
| Cutoff Ditch | Canal | 207 | Wood | 41 17 33 N | 083 50 07 W |
| Cutshall Ditch | Canal | 203 | Lucas | 41 33 38 N | 083 48 31 W |
| Cutter High School | School | 169 | Hamilton | 39 06 39 N | 084 30 33 W |
| Cutter Playground | Park | 169 | Hamilton | 39 06 40 N | 084 30 35 W |
| Cutters Landing | Locale | 183 | Washington | 39 20 33 N | 081 33 24 W |
| Cutting Cemetery | Cemetery | 245 | Wyandot | 40 55 21 N | 083 14 37 W |
| Cutts Creek | Stream | | Geauga | 41 35 31 N | 081 11 20 W |
| Cuttys Camp | Locale | 360 | Stark | 40 56 55 N | 081 14 39 W |
| Cuyahoga Community College - West Campus | School | 271 | Cuyahoga | 41 22 07 N | 081 45 53 W |
| Cuyahoga County | Civil | 180 | Cuyahoga | 41 26 00 N | 081 39 59 W |
| Cuyahoga County Airport | Airport | 264 | Cuyahoga | 41 33 54 N | 081 29 10 W |
| Cuyahoga County Childrens School | School | 210 | Cuyahoga | 41 29 12 N | 081 42 37 W |
| Cuyahoga County Criminal Court | Building | 196 | Cuyahoga | 41 30 22 N | 081 40 41 W |
| Cuyahoga County Detention Home | Building | 204 | Cuyahoga | 41 29 52 N | 081 40 22 W |
| Cuyahoga County Fairgrounds | Locale | 244 | Cuyahoga | 41 21 55 N | 081 50 26 W |
| Cuyahoga County Hospital Heliport | Airport | 205 | Cuyahoga | 41 27 39 N | 081 41 51 W |
| Cuyahoga Falls | Populated Place | 312 | Summit | 41 08 02 N | 081 29 04 W |
| Cuyahoga Falls Church of the Nazarene | Church | 308 | Summit | 41 09 30 N | 081 29 54 W |
| Cuyahoga Falls City Hall | Building | 315 | Summit | 41 08 19 N | 081 29 02 W |
| Cuyahoga Falls HIgh School | School | 321 | Summit | 41 08 22 N | 081 29 15 W |
| Cuyahoga Falls Low Head Dam | Dam | 307 | Summit | 41 08 18 N | 081 28 53 W |
| Cuyahoga Falls Low Head Reservoir | Reservoir | 307 | Summit | 41 08 18 N | 081 28 53 W |
| Cuyahoga Falls Post Office | Post Office | 316 | Summit | 41 08 08 N | 081 29 04 W |
| Cuyahoga Falls Post Office | Post Office | 312 | Summit | 41 08 00 N | 081 29 04 W |
| Cuyahoga Heights | Populated Place | 218 | Cuyahoga | 41 26 07 N | 081 39 26 W |
| Cuyahoga Heights Elementary School | School | 225 | Cuyahoga | 41 25 33 N | 081 38 34 W |
| Cuyahoga Heights High School | School | 224 | Cuyahoga | 41 25 38 N | 081 38 33 W |
| Cuyahoga Heights Public Hall | Building | 226 | Cuyahoga | 41 25 34 N | 081 38 29 W |
| Cuyahoga River | Stream | | Cuyahoga | 41 30 13 N | 081 42 44 W |
| Cuyahoga River Reservoir | Reservoir | 256 | Summit | 41 07 24 N | 081 29 53 W |
| Cuyahoga Valley Christian Academy | School | 311 | Summit | 41 11 48 N | 081 29 35 W |
| Cuyahoga Valley National Park | Park | 210 | Summit | 41 14 30 N | 081 32 59 W |
| Cuyahoga Valley National Recreation Area | Park | 181 | Cuyahoga | 41 22 45 N | 081 36 59 W |
| Cy Young Memorial Park | Park | 251 | Tuscarawas | 40 16 51 N | 081 36 04 W |
| Cyanamid Corporation Pond | Reservoir | 200 | Washington | 39 25 48 N | 081 25 29 W |
| Cyanamid Corporation Pond Dam | Dam | 200 | Washington | 39 25 48 N | 081 25 29 W |
| Cyclorama Heights | Populated Place | 268 | Hamilton | 39 08 26 N | 084 34 50 W |
| Cygnet | Populated Place | 215 | Wood | 41 14 24 N | 083 38 36 W |
| Cygnet Branch Wayne Public Library | Building | 215 | Wood | 41 14 24 N | 083 38 34 W |
| Cygnet Cemetery | Cemetery | 216 | Wood | 41 14 24 N | 083 37 57 W |
| Cygnet Post Office | Post Office | 215 | Wood | 41 14 23 N | 083 38 36 W |
| Cynthian Cemetery | Cemetery | 299 | Shelby | 40 17 56 N | 084 22 10 W |
| Cynthiana | Populated Place | 293 | Pike | 39 10 25 N | 083 20 55 W |
| Cynthiana Cemetery | Cemetery | 293 | Pike | 39 10 30 N | 083 20 48 W |
| Cynthiana Post Office | Post Office | 294 | Pike | 39 10 25 N | 083 20 57 W |
| Cyrene African Methodist Episcopal Church | Church | 265 | Miami | 40 08 58 N | 084 14 32 W |
| D A Chandler Airport | Airport | 292 | Huron | 41 07 58 N | 082 27 39 W |
| D J Hard Tennis Courts | Park | 335 | Wayne | 40 48 45 N | 081 56 06 W |
| D J Lombardo Student Center | Building | 327 | Cuyahoga | 41 29 30 N | 081 31 45 W |
| D Number 11 Mine | Mine | 379 | Harrison | 40 11 36 N | 080 55 44 W |
| D'Arcy Estates (subdivision) | Populated Place | 192 | Wood | 41 32 44 N | 083 39 05 W |
| Dabney Hall | Building | 245 | Hamilton | 39 07 54 N | 084 30 37 W |
| Dace Hollow | Valley | | Scioto | 38 54 52 N | 082 59 00 W |
| Dadsville | Populated Place | 287 | Preble | 39 44 40 N | 084 30 03 W |
| Daft Subdivision | Populated Place | 271 | Williams | 41 34 07 N | 084 33 21 W |
| Dag Hammarskjold Elementary School | School | 359 | Cuyahoga | 41 21 35 N | 081 42 49 W |
| Dague | Populated Place | 221 | Paulding | 41 03 46 N | 084 34 49 W |
| Dague Cemetery | Cemetery | 286 | Franklin | 40 03 11 N | 082 50 35 W |
| Dague Post Office (historical) | Post Office | 221 | Paulding | 41 03 45 N | 084 34 50 W |
| Dahlinghaus Ditch | Canal | 276 | Mercer | 40 27 41 N | 084 34 22 W |
| Dahs Ditch | Canal | 193 | Erie | 41 23 16 N | 082 43 55 W |
| Dairy | Populated Place | 386 | Monroe | 39 39 09 N | 080 58 49 W |
| Dairy Post Office (historical) | Post Office | 389 | Monroe | 39 39 10 N | 080 58 49 W |
| Dairy Run | Stream | | Athens | 39 19 05 N | 082 06 23 W |
| Daisy Avenue Church of God (historical) | Church | 211 | Cuyahoga | 41 27 33 N | 081 42 09 W |
| Dakin Chapel School (historical) | School | 318 | Clinton | 39 31 01 N | 083 39 04 W |
| Dakins Run | Stream | | Warren | 39 32 02 N | 084 04 15 W |
| Dal-Mar Mobile Home Park | Populated Place | 281 | Clark | 39 58 14 N | 083 50 06 W |
| Dale | Populated Place | 295 | Washington | 39 29 20 N | 081 45 59 W |
| Dale Park | Park | 171 | Hamilton | 39 08 44 N | 084 22 49 W |
| Dale R Rice Elementary School | School | 192 | Lake | 41 42 07 N | 081 22 00 W |
| Dale School | School | 172 | Hamilton | 39 08 46 N | 084 22 49 W |
| Dale Soccer Field | Park | 335 | Wayne | 40 48 46 N | 081 55 55 W |
| Dale Walborn Reservoir | Reservoir | 327 | Stark | 40 58 24 N | 081 10 41 W |
| Dale Walborn Reservoir Dam | Dam | 332 | Stark | 40 58 24 N | 081 10 41 W |
| Daleville Cemetery | Cemetery | 189 | Pike | 39 06 08 N | 083 03 36 W |
| Daley Cemetery | Cemetery | 226 | Pike | 39 00 19 N | 083 01 03 W |
| Daleyville | Populated Place | 182 | Pike | 39 06 24 N | 083 03 14 W |
| Daleyville Post Office (historical) | Post Office | 183 | Pike | 39 06 25 N | 083 03 15 W |
| Dallas School (historical) | School | 299 | Champaign | 40 03 11 N | 083 46 42 W |
| Dallasburg | Populated Place | 245 | Warren | 39 16 20 N | 084 11 29 W |
| Dallmans Corner | Populated Place | 241 | Hamilton | 39 10 55 N | 084 25 39 W |
| Dalrymple Corners | Populated Place | 390 | Knox | 40 24 08 N | 082 36 36 W |
| Dalton | Populated Place | 336 | Wayne | 40 47 56 N | 081 41 43 W |
| Dalton Elementary School | School | 344 | Wayne | 40 47 52 N | 081 41 52 W |
| Dalton High School | School | 341 | Wayne | 40 48 13 N | 081 41 43 W |
| Dalzell | Populated Place | 321 | Washington | 39 33 53 N | 081 18 14 W |
| Dalzell Cemetery | Cemetery | 320 | Washington | 39 33 49 N | 081 18 16 W |
| Dam Number 1 (historical) | Dam | 182 | Washington | 39 24 46 N | 081 27 25 W |