Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Tanner Run | Stream | | Meigs | 38 55 54 N | 081 50 35 W |
| Tanquary Cemetery | Cemetery | 256 | Pickaway | 39 32 08 N | 083 12 06 W |
| Tappan | Populated Place | 304 | Harrison | 40 21 26 N | 081 12 27 W |
| Tappan Airpark | Airport | 276 | Harrison | 40 18 36 N | 081 06 36 W |
| Tappan Cemetery | Cemetery | 301 | Harrison | 40 21 29 N | 081 12 27 W |
| Tappan Dam | Dam | 272 | Harrison | 40 21 30 N | 081 13 34 W |
| Tappan Elementary School | School | 337 | Portage | 41 09 08 N | 081 14 14 W |
| Tappan Hall | Building | 266 | Butler | 39 30 08 N | 084 43 54 W |
| Tappan Lake | Reservoir | 272 | Harrison | 40 21 30 N | 081 13 34 W |
| Tappan Lake Marina | Locale | 278 | Harrison | 40 20 22 N | 081 11 49 W |
| Tappan Lake Mine | Mine | 344 | Harrison | 40 22 51 N | 081 13 05 W |
| Tappan Lake Park | Park | 314 | Harrison | 40 19 25 N | 081 10 42 W |
| Tappan Post Office (historical) | Post Office | 288 | Harrison | 40 21 25 N | 081 12 29 W |
| Tappan Square | Park | 247 | Lorain | 41 17 34 N | 082 13 08 W |
| Tapscott Cemetery | Cemetery | 209 | Warren | 39 34 38 N | 084 18 27 W |
| Tapscott Primitive Baptist Church | Church | 208 | Warren | 39 34 38 N | 084 18 28 W |
| Tar Creek | Stream | | Athens | 39 12 41 N | 081 49 57 W |
| Tar Farm School (historical) | School | 279 | Vinton | 39 10 37 N | 082 26 55 W |
| Tar Hollow | Valley | | Hocking | 39 22 21 N | 082 43 57 W |
| Tar Hollow State Forest | Forest | 330 | Ross | 39 21 03 N | 082 46 18 W |
| Tar Kiln Run | Stream | | Lawrence | 38 40 44 N | 082 38 11 W |
| Tar Run | Stream | | Belmont | 40 00 12 N | 080 52 14 W |
| Tara Estates | Populated Place | 188 | Gallia | 38 53 17 N | 082 09 02 W |
| Tarbill Cemetery | Cemetery | 247 | Pickaway | 39 32 12 N | 083 10 22 W |
| Tarburner Run | Stream | | Jefferson | 40 32 31 N | 080 40 38 W |
| Tarcamp Run | Stream | | Hocking | 39 02 22 N | 082 28 08 W |
| Tare Creek | Stream | | Geauga | 41 28 34 N | 081 06 35 W |
| Tarhe Cemetery | Cemetery | 256 | Wyandot | 40 51 43 N | 083 16 03 W |
| Tarhe Elementary School | School | 270 | Fairfield | 39 44 31 N | 082 37 22 W |
| Tarhe Run | Stream | | Fairfield | 39 42 20 N | 082 35 44 W |
| Tarhe Town (historical) | Populated Place | 251 | Fairfield | 39 42 28 N | 082 35 58 W |
| Tarkiln Hollow | Valley | | Scioto | 38 41 13 N | 083 14 29 W |
| Tarkiln School (historical) | School | 269 | Coshocton | 40 21 45 N | 082 01 20 W |
| Tarklin Cemetery | Cemetery | 261 | Fairfield | 39 39 53 N | 082 35 02 W |
| Tarlton | Populated Place | 275 | Pickaway | 39 33 21 N | 082 46 34 W |
| Tarlton Cemetery | Cemetery | 282 | Pickaway | 39 33 18 N | 082 46 26 W |
| Tarlton Cross Mound | Summit | 283 | Fairfield | 39 33 44 N | 082 47 08 W |
| Tarlton Post Office | Post Office | 274 | Pickaway | 39 33 20 N | 082 46 35 W |
| Tarlton State Park | Park | 277 | Fairfield | 39 33 44 N | 082 47 04 W |
| Tarlton United Brethren Cemetery | Cemetery | 268 | Fairfield | 39 33 28 N | 082 46 46 W |
| Tarrs Run | Stream | | Jefferson | 40 16 23 N | 080 37 10 W |
| Tarrymore | Populated Place | 296 | Stark | 40 43 59 N | 081 31 04 W |
| Tater Ridge | Ridge | 292 | Adams | 38 55 05 N | 083 28 39 W |
| Tater Ridge School (historical) | School | 291 | Adams | 38 54 18 N | 083 28 60 W |
| Tathams Stolport | Airport | 245 | Hancock | 41 04 25 N | 083 41 05 W |
| Tattle Creek | Stream | | Scioto | 38 49 29 N | 082 55 44 W |
| Tawa Run | Stream | | Putnam | 41 01 27 N | 084 03 05 W |
| Tawa School (historical) | School | 284 | Union | 40 25 05 N | 083 16 03 W |
| Tawawa | Populated Place | 330 | Shelby | 40 14 10 N | 084 01 40 W |
| Tawawa Lake | Lake | 292 | Shelby | 40 17 15 N | 084 08 24 W |
| Tawawa Post Office (historical) | Post Office | 330 | Shelby | 40 14 10 N | 084 01 40 W |
| Taylor Academy (historical) | School | 296 | Cuyahoga | 41 30 13 N | 081 33 19 W |
| Taylor Cemetery | Cemetery | 246 | Coshocton | 40 19 04 N | 081 38 57 W |
| Taylor Cemetery | Cemetery | 214 | Defiance | 41 13 51 N | 084 21 47 W |
| Taylor Cemetery | Cemetery | 278 | Noble | 39 38 16 N | 081 31 04 W |
| Taylor Cemetery | Cemetery | 228 | Van Wert | 40 56 32 N | 084 34 29 W |
| Taylor Cemetery | Cemetery | 313 | Washington | 39 28 07 N | 081 12 47 W |
| Taylor Centre (historical) | Populated Place | 310 | Union | 40 20 41 N | 083 23 45 W |
| Taylor Centre Post Office (historical) | Post Office | | Union | 40 20 40 N | 083 23 40 W |
| Taylor Church (historical) | Church | 213 | Fulton | 41 30 54 N | 084 03 21 W |
| Taylor Commons Plaza Shopping Center | Locale | 293 | Cuyahoga | 41 30 25 N | 081 33 18 W |
| Taylor Corners | Populated Place | 293 | Mahoning | 41 07 01 N | 080 47 39 W |
| Taylor Creek | Stream | | Hamilton | 39 12 41 N | 084 41 47 W |
| Taylor Creek | Stream | | Hardin | 40 38 33 N | 083 37 27 W |
| Taylor Creek School (historical) | School | 322 | Hardin | 40 33 19 N | 083 38 14 W |
| Taylor Ditch | Canal | 187 | Erie | 41 24 32 N | 082 40 59 W |
| Taylor Elementary School | School | 262 | Hamilton | 39 15 09 N | 084 34 57 W |
| Taylor Field | Park | 377 | Richland | 40 46 28 N | 082 31 43 W |
| Taylor Fork | Stream | | Noble | 39 39 07 N | 081 32 44 W |
| Taylor Hall | Building | 359 | Portage | 41 09 01 N | 081 20 38 W |
| Taylor Hall | Building | 327 | Wayne | 40 48 37 N | 081 56 16 W |
| Taylor High School | School | 180 | Hamilton | 39 09 13 N | 084 44 47 W |
| Taylor Hill | Summit | 263 | Scioto | 38 50 46 N | 082 49 24 W |
| Taylor Hollow | Valley | | Morgan | 39 35 50 N | 081 47 41 W |
| Taylor Lake | Reservoir | 324 | Lorain | 41 04 06 N | 082 10 60 W |
| Taylor Lake Dam | Dam | 324 | Lorain | 41 04 06 N | 082 10 60 W |
| Taylor Post Office (historical) | Post Office | 269 | Franklin | 39 59 15 N | 082 50 35 W |
| Taylor Ridge | Ridge | 294 | Athens | 39 28 57 N | 082 06 38 W |
| Taylor Ridge Cemetery | Cemetery | 280 | Athens | 39 28 21 N | 082 06 05 W |
| Taylor Ridge Church | Church | 294 | Athens | 39 28 57 N | 082 06 31 W |
| Taylor Run | Stream | | Ross | 39 13 49 N | 083 13 36 W |
| Taylor Run | Stream | | Wyandot | 40 58 50 N | 083 12 46 W |
| Taylor School | School | 181 | Butler | 39 21 49 N | 084 33 29 W |
| Taylor School (historical) | School | 355 | Licking | 40 11 02 N | 082 41 32 W |
| Taylor School (historical) | School | 222 | Paulding | 41 00 15 N | 084 30 55 W |
| Taylor School (historical) | School | 309 | Union | 40 22 18 N | 083 25 13 W |
| Taylor Station | Populated Place | 269 | Franklin | 39 59 16 N | 082 50 35 W |
| Taylor Station Church | Church | 274 | Franklin | 40 00 05 N | 082 50 02 W |
| Taylor Woods Industrial Park | Locale | 222 | Lorain | 41 22 20 N | 082 04 13 W |
| Taylors Chapel | Church | 280 | Brown | 39 05 11 N | 083 58 34 W |
| Taylors Chapel Cemetery | Cemetery | 281 | Brown | 39 05 17 N | 083 58 32 W |
| Taylors Creek | Populated Place | 161 | Hamilton | 39 12 38 N | 084 40 27 W |
| Taylors Creek Post Office (historical) | Post Office | 171 | Hamilton | 39 12 40 N | 084 40 25 W |
| Taylors Hill | Summit | 340 | Jefferson | 40 26 48 N | 080 36 52 W |
| Taylorsburg | Populated Place | 283 | Montgomery | 39 49 58 N | 084 17 36 W |
| Taylorsburg Post Office (historical) | Post Office | 283 | Montgomery | 39 50 00 N | 084 17 35 W |
| Taylorsville | Populated Place | 308 | Highland | 39 04 38 N | 083 44 03 W |
| Taylorsville | Populated Place | 235 | Montgomery | 39 51 51 N | 084 09 59 W |
| Taylorsville Dam | Dam | 235 | Montgomery | 39 52 27 N | 084 09 44 W |
| Taylorsville Post Office (historical) | Post Office | 307 | Highland | 39 04 40 N | 083 43 60 W |
| Taylorsville Post Office (historical) | Post Office | 233 | Montgomery | 39 51 50 N | 084 09 60 W |
| Taylorsville Reservoir | Reservoir | 235 | Montgomery | 39 52 27 N | 084 09 44 W |
| Taylortown | Populated Place | 375 | Jefferson | 40 27 39 N | 080 39 28 W |
| Taylortown | Populated Place | 359 | Richland | 40 51 28 N | 082 36 37 W |
| Tea Run | Stream | | Holmes | 40 39 08 N | 081 56 50 W |
| Tea Run School (historical) | School | 293 | Holmes | 40 39 08 N | 081 55 27 W |
| Teachout-Price Hall | Building | 384 | Portage | 41 18 45 N | 081 08 42 W |
| Teacup Cemetery | Cemetery | 301 | Darke | 40 19 30 N | 084 32 16 W |
| Teague Cemetery | Cemetery | 309 | Preble | 39 34 12 N | 084 41 05 W |
| Teakwood Acres | Populated Place | 259 | Hamilton | 39 12 24 N | 084 32 32 W |