Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Graham Road Bridge | Bridge | 277 | Ashtabula | 41 46 54 N | 080 37 03 W |
| Graham Road Plaza Shopping Center | Locale | 324 | Summit | 41 10 02 N | 081 24 15 W |
| Graham School (historical) | School | 279 | Huron | 41 04 40 N | 082 38 32 W |
| Graham School (historical) | School | 351 | Knox | 40 20 04 N | 082 25 14 W |
| Graham Square Plaza Shopping Center | Locale | 308 | Summit | 41 09 50 N | 081 28 43 W |
| Grahams Landing Airport | Airport | 271 | Medina | 41 13 32 N | 081 56 29 W |
| Grahamsville | Populated Place | 234 | Jackson | 38 57 31 N | 082 42 34 W |
| Grahamsville Cemetery | Cemetery | 244 | Jackson | 38 57 18 N | 082 42 37 W |
| Grahamsville Post Office (historical) | Post Office | 234 | Jackson | 38 57 30 N | 082 42 35 W |
| Grainthorpe (historical) | Populated Place | 176 | Hamilton | 39 16 25 N | 084 25 59 W |
| Grampian Hills | Populated Place | 348 | Carroll | 40 30 23 N | 081 08 09 W |
| Granatir Airport | Airport | 364 | Jefferson | 40 25 30 N | 080 40 29 W |
| Granby Elementary School | School | 265 | Franklin | 40 07 02 N | 083 03 21 W |
| Grand Arcade | Building | 198 | Cuyahoga | 41 30 01 N | 081 41 52 W |
| Grand Avenue Baptist Church | Church | 255 | Greene | 39 49 15 N | 084 01 21 W |
| Grand Forest Beach (subdivision) | Populated Place | 176 | Erie | 41 24 30 N | 082 34 40 W |
| Grand Lake | Reservoir | 265 | Auglaize | 40 31 17 N | 084 25 17 W |
| Grand Lake Mobile Home Park | Populated Place | 265 | Mercer | 40 30 12 N | 084 32 10 W |
| Grand Lake Mushroom Farm | Locale | 263 | Mercer | 40 32 29 N | 084 34 28 W |
| Grand Lake State Park | Park | 263 | Mercer | 40 31 52 N | 084 29 59 W |
| Grand Market Place Shopping Center | Locale | 329 | Summit | 41 05 44 N | 081 32 31 W |
| Grand Opera House (historical) | Building | 168 | Hamilton | 39 06 07 N | 084 30 47 W |
| Grand Prairie Cemetery | Cemetery | 292 | Marion | 40 41 26 N | 083 09 14 W |
| Grand Prairie Elementary School | School | 287 | Marion | 40 40 23 N | 083 07 48 W |
| Grand Rapids | Populated Place | 201 | Wood | 41 24 43 N | 083 51 52 W |
| Grand Rapids Branch Weston Public Library | Building | 202 | Wood | 41 24 36 N | 083 51 41 W |
| Grand Rapids Dam | Dam | 194 | Wood | 41 24 44 N | 083 52 34 W |
| Grand Rapids Elementary School | School | 201 | Wood | 41 24 40 N | 083 51 48 W |
| Grand Rapids Post Office | Post Office | 202 | Wood | 41 24 33 N | 083 51 52 W |
| Grand Rapids Township Park | Park | 202 | Wood | 41 24 37 N | 083 51 41 W |
| Grand Ridge School (historical) | School | 288 | Guernsey | 40 04 12 N | 081 24 24 W |
| Grand River | Populated Place | 186 | Lake | 41 44 10 N | 081 16 52 W |
| Grand River | Stream | | Lake | 41 45 37 N | 081 16 50 W |
| Grand River Academy | School | 250 | Ashtabula | 41 46 20 N | 080 51 38 W |
| Grand River Post Office | Post Office | 186 | Lake | 41 44 10 N | 081 16 54 W |
| Grand River State Wildlife Area | Park | 250 | Trumbull | 41 24 38 N | 080 55 19 W |
| Grand River United Church of Christ | Church | 183 | Lake | 41 44 19 N | 081 16 51 W |
| Grand River Yacht Club | Locale | 174 | Lake | 41 44 22 N | 081 16 42 W |
| Grand Valley Church | Church | 246 | Ashtabula | 41 36 17 N | 080 54 51 W |
| Grand Valley Elementary School | School | 270 | Ashtabula | 41 32 37 N | 080 52 09 W |
| Grand Valley High School | School | 274 | Ashtabula | 41 32 11 N | 080 51 57 W |
| Grand Victory Church | Church | 227 | Van Wert | 40 57 37 N | 084 33 03 W |
| Grand View (subdivision) | Populated Place | 196 | Butler | 39 24 55 N | 084 34 08 W |
| Grand View (subdivision) | Populated Place | 240 | Washington | 39 25 49 N | 081 27 12 W |
| Grand View School (historical) | School | 275 | Morgan | 39 35 51 N | 081 39 22 W |
| Grandview | Populated Place | 197 | Hamilton | 39 11 39 N | 084 43 28 W |
| Grandview | Populated Place | 192 | Washington | 39 30 29 N | 081 04 55 W |
| Grandview Cemetery | Cemetery | 391 | Belmont | 39 52 38 N | 080 54 25 W |
| Grandview Cemetery | Cemetery | 347 | Carroll | 40 34 10 N | 081 04 57 W |
| Grandview Cemetery | Cemetery | 342 | Champaign | 40 06 01 N | 083 44 03 W |
| Grandview Cemetery | Cemetery | 384 | Columbiana | 40 53 08 N | 080 50 25 W |
| Grandview Cemetery | Cemetery | 269 | Fairfield | 39 43 13 N | 082 24 56 W |
| Grandview Cemetery | Cemetery | 369 | Harrison | 40 23 25 N | 081 05 51 W |
| Grandview Cemetery | Cemetery | 342 | Mahoning | 40 54 15 N | 081 01 51 W |
| Grandview Cemetery | Cemetery | 396 | Monroe | 39 48 14 N | 080 57 49 W |
| Grandview Cemetery | Cemetery | 219 | Pike | 39 08 13 N | 082 50 48 W |
| Grandview Cemetery | Cemetery | 237 | Ross | 39 19 27 N | 082 59 10 W |
| Grandview Cemetery | Cemetery | 286 | Tuscarawas | 40 36 06 N | 081 31 49 W |
| Grandview Cemetery | Cemetery | 251 | Washington | 39 31 07 N | 081 04 50 W |
| Grandview Christian Church | Church | 391 | Belmont | 39 52 38 N | 080 54 23 W |
| Grandview Country Club | Locale | 338 | Lake | 41 30 04 N | 081 05 51 W |
| Grandview Estates | Populated Place | 187 | Gallia | 38 49 41 N | 082 12 16 W |
| Grandview Heights | Populated Place | 336 | Champaign | 40 11 08 N | 083 58 13 W |
| Grandview Heights | Populated Place | 236 | Franklin | 39 58 47 N | 083 02 27 W |
| Grandview Heights | Populated Place | 337 | Jefferson | 40 10 14 N | 080 42 33 W |
| Grandview Heights City Hall | Building | 234 | Franklin | 39 58 41 N | 083 02 41 W |
| Grandview Heights High School | School | 244 | Franklin | 39 59 05 N | 083 02 54 W |
| Grandview Heights Public Library | Building | 243 | Franklin | 39 58 55 N | 083 03 01 W |
| Grandview Hospital | Hospital | 231 | Montgomery | 39 46 07 N | 084 12 08 W |
| Grandview Park (subdivision) | Populated Place | 183 | Ashtabula | 41 51 32 N | 080 57 31 W |
| Grandview Plaza Shopping Center | Locale | 278 | Auglaize | 40 34 50 N | 084 12 18 W |
| Grandview Run | Stream | | Washington | 39 30 22 N | 081 05 05 W |
| Grandview School (historical) | School | 319 | Fayette | 39 37 13 N | 083 34 41 W |
| Grandview Track | Locale | 312 | Geauga | 41 21 34 N | 081 23 18 W |
| Grange Hall | Building | 375 | Monroe | 39 44 59 N | 081 13 27 W |
| Grange Hall | Building | 264 | Monroe | 39 37 42 N | 081 14 20 W |
| Grange Hall | Building | 229 | Washington | 39 28 36 N | 081 18 15 W |
| Grange Hall | Populated Place | 259 | Pickaway | 39 38 00 N | 083 11 07 W |
| Grange Hall School (historical) | School | 295 | Brown | 38 54 50 N | 083 49 40 W |
| Grange Hill School (historical) | School | 349 | Tuscarawas | 40 23 48 N | 081 29 02 W |
| Granger | Populated Place | 334 | Medina | 41 09 20 N | 081 43 54 W |
| Granger Ditch | Canal | 317 | Medina | 41 10 25 N | 081 44 41 W |
| Granger Elementary School | School | 277 | Cuyahoga | 41 24 58 N | 081 34 45 W |
| Granger Island | Island | 183 | Lucas | 41 29 41 N | 083 42 55 W |
| Granger Lake | Reservoir | 311 | Medina | 41 09 12 N | 081 41 29 W |
| Granger Lake Dam | Dam | 311 | Medina | 41 09 12 N | 081 41 29 W |
| Granger Post Office (historical) | Post Office | 334 | Medina | 41 09 20 N | 081 43 54 W |
| Granger United Methodist Church | Church | | Medina | 41 09 22 N | 081 43 52 W |
| Grangeview Park | Park | 295 | Greene | 39 46 03 N | 084 04 57 W |
| Granite Knob School (historical) | School | 323 | Muskingum | 40 05 52 N | 081 44 11 W |
| Granny Bour | Stream | | Jefferson | 40 31 47 N | 080 48 39 W |
| Granny Branch | Stream | | Gallia | 38 46 57 N | 082 22 51 W |
| Granny Creek | Stream | | Knox | 40 25 49 N | 082 31 21 W |
| Granny Run | Stream | | Meigs | 38 56 42 N | 081 48 27 W |
| Grannys Run | Stream | | Summit | 41 15 42 N | 081 33 29 W |
| Grant | Populated Place | 284 | Hardin | 40 42 38 N | 083 34 05 W |
| Grant Campbell Farm Cemetery | Cemetery | 259 | Pickaway | 39 32 35 N | 083 12 23 W |
| Grant Cemetery | Cemetery | 285 | Hardin | 40 43 27 N | 083 33 39 W |
| Grant Elementary School | School | 186 | Butler | 39 24 19 N | 084 31 60 W |
| Grant Elementary School | School | 211 | Cuyahoga | 41 28 59 N | 081 48 05 W |
| Grant Elementary School | School | 189 | Lake | 41 39 50 N | 081 24 12 W |
| Grant Elementary School | School | 270 | Montgomery | 39 44 25 N | 084 07 60 W |
| Grant Farm Park | Park | 237 | Montgomery | 39 39 47 N | 084 14 42 W |
| Grant Hollow | Valley | | Monroe | 39 43 42 N | 081 03 25 W |
| Grant Lake | Reservoir | 278 | Brown | 38 59 47 N | 083 55 42 W |
| Grant Lake Dam | Dam | 242 | Brown | 38 55 12 N | 083 55 42 W |
| Grant Lake Wildlife Area | Park | 276 | Brown | 39 00 30 N | 083 56 02 W |
| Grant Lifeflight 2 Heliport | Airport | 221 | Jackson | 39 07 30 N | 082 32 18 W |
| Grant Medical Center | Hospital | 232 | Franklin | 39 57 38 N | 082 59 31 W |
| Grant Memorial Community Building | Building | 269 | Clermont | 38 57 47 N | 084 04 51 W |