Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Tomlinson Hall | Building | 208 | Cuyahoga | 41 30 14 N | 081 36 34 W |
| Tomsich Hall | Building | 320 | Knox | 40 22 22 N | 082 23 54 W |
| Toronto Branch Library | Building | 213 | Jefferson | 40 27 51 N | 080 36 03 W |
| Tower Residence Hall | Building | 296 | Clark | 39 56 09 N | 083 48 40 W |
| Towers Hall | Building | 259 | Franklin | 40 07 31 N | 082 56 12 W |
| Townley Court | Building | 240 | Franklin | 39 57 38 N | 082 59 03 W |
| Townshend Hall | Building | 229 | Franklin | 39 59 59 N | 083 00 57 W |
| Trailside Museum | Building | 210 | Hamilton | 39 08 23 N | 084 30 56 W |
| Trenton Library | Building | 198 | Butler | 39 28 51 N | 084 27 28 W |
| Treudley Hall | Building | 197 | Athens | 39 19 32 N | 082 06 16 W |
| Tri-State Black Museum | Building | 220 | Columbiana | 40 37 58 N | 080 33 19 W |
| Trinity Hall | Building | 301 | Jefferson | 40 22 32 N | 080 37 03 W |
| Trisolini Gallery | Building | 212 | Athens | 39 19 39 N | 082 05 57 W |
| Troutman Hall | Building | 238 | Franklin | 39 57 20 N | 082 56 12 W |
| Troy City Hall | Building | 253 | Miami | 40 02 18 N | 084 12 16 W |
| Troy-Hayner Cultural Center | Building | 254 | Miami | 40 02 28 N | 084 12 23 W |
| Troy-Miami County Public Library | Building | 254 | Miami | 40 02 30 N | 084 12 27 W |
| True Hall | Building | 187 | Athens | 39 19 21 N | 082 05 35 W |
| Trumbull County Childrens Home | Building | 285 | Trumbull | 41 14 08 N | 080 47 53 W |
| Trumbull County Courthouse | Building | 271 | Trumbull | 41 14 13 N | 080 49 08 W |
| Truro Township House | Building | 272 | Franklin | 39 57 19 N | 082 48 57 W |
| Tucker Hall | Building | 187 | Lucas | 41 39 43 N | 083 36 60 W |
| Tupper Hall | Building | 215 | Athens | 39 19 33 N | 082 05 56 W |
| Turner Hall | Building | 291 | Hardin | 40 46 04 N | 083 49 31 W |
| Tuscarawas County Courthouse | Building | 276 | Tuscarawas | 40 29 24 N | 081 26 42 W |
| Tuscarawas County Home | Building | 276 | Tuscarawas | 40 28 15 N | 081 24 18 W |
| Tuscarawas County Jail | Building | 274 | Tuscarawas | 40 29 27 N | 081 26 33 W |
| Tuscarawas County Jewish Center | Building | 275 | Tuscarawas | 40 29 30 N | 081 26 52 W |
| Tuscarawas County Law Library | Building | 276 | Tuscarawas | 40 29 24 N | 081 26 42 W |
| Tuscarawas County Public Library | Building | 275 | Tuscarawas | 40 29 30 N | 081 26 45 W |
| Twinsburg Community Center | Building | 348 | Summit | 41 18 32 N | 081 27 44 W |
| Twinsburg Public Library | Building | 305 | Summit | 41 18 46 N | 081 26 27 W |
| Twinsburg Town Hall | Building | 305 | Summit | 41 18 48 N | 081 26 29 W |
| Tyler Digital Communications Center | Building | 319 | Greene | 39 44 48 N | 083 48 41 W |
| Ukrainian National Hall | Building | 206 | Cuyahoga | 41 28 53 N | 081 41 28 W |
| Umbria Hall | Building | 201 | Lucas | 41 42 41 N | 083 42 24 W |
| Union Central Building | Building | 162 | Hamilton | 39 05 58 N | 084 30 47 W |
| Union City City Hall | Building | 338 | Darke | 40 11 58 N | 084 48 19 W |
| Union County Childrens Home | Building | 299 | Union | 40 14 31 N | 083 19 54 W |
| Union County Courthouse | Building | 302 | Union | 40 14 09 N | 083 22 08 W |
| Union County Home | Building | 300 | Union | 40 15 48 N | 083 21 44 W |
| Union Depot | Building | 303 | Summit | 41 04 38 N | 081 31 01 W |
| Union Gazebo | Building | 238 | Hancock | 41 03 12 N | 083 39 07 W |
| Union Grange Hall | Building | 268 | Tuscarawas | 40 26 34 N | 081 27 44 W |
| Union Hall | Building | 239 | Franklin | 39 58 11 N | 082 59 21 W |
| Union Station | Building | 228 | Franklin | 39 58 17 N | 082 59 59 W |
| Union Station | Building | 154 | Hamilton | 39 06 36 N | 084 32 13 W |
| Union Township Hall | Building | 302 | Union | 40 10 45 N | 083 26 13 W |
| Union Township Library | Building | 265 | Clermont | 39 06 01 N | 084 17 59 W |
| Union Township Public Library | Building | 153 | Brown | 38 44 43 N | 083 50 44 W |
| Unionville Center Village Hall | Building | 295 | Union | 40 08 17 N | 083 20 23 W |
| United Building | Building | | Summit | 41 05 06 N | 081 31 00 W |
| United Methodist Community Center | Building | 279 | Mahoning | 41 06 08 N | 080 37 48 W |
| University Center | Building | 292 | Greene | 39 46 50 N | 084 03 53 W |
| University Center | Building | 195 | Hamilton | 39 08 59 N | 084 28 29 W |
| University Circle Regional Branch Library | Building | 207 | Cuyahoga | 41 30 17 N | 081 36 48 W |
| University Circle Research Center | Building | 210 | Cuyahoga | 41 30 02 N | 081 36 33 W |
| University Club | Building | 164 | Hamilton | 39 06 03 N | 084 30 21 W |
| University Hall | Building | 269 | Delaware | 40 17 47 N | 083 04 01 W |
| University Hall | Building | 231 | Franklin | 40 00 02 N | 083 00 53 W |
| University Hall | Building | 226 | Hamilton | 39 08 11 N | 084 30 30 W |
| University Hall | Building | 185 | Lucas | 41 39 43 N | 083 36 52 W |
| University Hall | Building | 210 | Wood | 41 22 33 N | 083 38 23 W |
| University Heights Branch Cleveland Heights-University Heights Public Library | Building | 305 | Cuyahoga | 41 30 03 N | 081 32 37 W |
| University Heights City Hall | Building | 314 | Cuyahoga | 41 29 50 N | 081 32 12 W |
| University of Dayton Arena | Building | 224 | Montgomery | 39 44 07 N | 084 11 59 W |
| University of Toledo Lake Erie Research Center | Building | 175 | Lucas | 41 41 19 N | 083 23 57 W |
| Upham Hall | Building | 279 | Butler | 39 30 32 N | 084 44 01 W |
| Upham Hall | Building | 220 | Franklin | 39 59 44 N | 083 01 10 W |
| Upper Arlington City Hall | Building | 253 | Franklin | 39 59 56 N | 083 03 44 W |
| Upper Arlington Public Library | Building | 250 | Franklin | 39 59 42 N | 083 03 40 W |
| Upper Sandusky City Hall | Building | 259 | Wyandot | 40 49 43 N | 083 16 58 W |
| Upper Sandusky Community Library | Building | 258 | Wyandot | 40 49 35 N | 083 17 04 W |
| Urbana City Hall | Building | 318 | Champaign | 40 06 24 N | 083 45 09 W |
| Ursuline Educational Center | Building | 332 | Cuyahoga | 41 29 42 N | 081 28 10 W |
| Usce Test Laboratory | Building | 150 | Hamilton | 39 02 53 N | 084 23 51 W |
| Valentine Theater Building | Building | 181 | Lucas | 41 39 11 N | 083 32 02 W |
| Valley Branch Public Library | Building | 169 | Hamilton | 39 13 25 N | 084 26 42 W |
| Valley Station Reading Fire Department | Building | | Hamilton | 39 13 26 N | 084 26 30 W |
| Valley View Town Hall | Building | 192 | Cuyahoga | 41 22 48 N | 081 36 28 W |
| Van Campen Hall | Building | 341 | Portage | 41 08 47 N | 081 20 03 W |
| Van Deusen Hall | Building | 354 | Portage | 41 09 01 N | 081 20 50 W |
| Van Wert Civic Theater | Building | 238 | Van Wert | 40 52 08 N | 084 34 27 W |
| Van Wert County Courthouse | Building | 239 | Van Wert | 40 52 11 N | 084 34 55 W |
| Van Wert County Home | Building | 238 | Van Wert | 40 52 38 N | 084 28 47 W |
| Van Wert County Law Library | Building | 239 | Van Wert | 40 52 11 N | 084 34 55 W |
| Van Wormer Library | Building | 257 | Hamilton | 39 07 51 N | 084 31 09 W |
| Vandalia Branch Library | Building | 299 | Montgomery | 39 53 10 N | 084 11 56 W |
| Variety Theatre | Building | 234 | Cuyahoga | 41 27 40 N | 081 46 13 W |
| Verder Hall | Building | 355 | Portage | 41 09 07 N | 081 20 35 W |
| Verity Student Center | Building | 251 | Butler | 39 31 33 N | 084 21 23 W |
| Vern Riffe Center for Government and the Arts | Building | 232 | Franklin | 39 57 37 N | 083 00 02 W |
| Vernal G Riffe Junior Building | Building | 219 | Franklin | 39 59 47 N | 083 01 16 W |
| Versailles Village Hall | Building | 300 | Darke | 40 13 20 N | 084 29 06 W |
| Veterans Memorial Auditorium | Building | 217 | Franklin | 39 57 43 N | 083 00 30 W |
| Veterans Memorial Coliseum | Building | 301 | Marion | 40 36 15 N | 083 07 28 W |
| Veterans Memorial Headquarters | Building | 164 | Hamilton | 39 06 03 N | 084 30 21 W |
| Village of Minster Administration Building | Building | 295 | Auglaize | 40 23 34 N | 084 22 50 W |
| Vinton County Childrens Home | Building | 226 | Vinton | 39 16 23 N | 082 28 11 W |
| Virginia B Gardner Fine Arts Pavilion | Building | 238 | Hancock | 41 03 13 N | 083 39 12 W |
| Virginia W Kettering Residence Hall | Building | 258 | Montgomery | 39 44 14 N | 084 10 15 W |
| Vivian Hall | Building | 229 | Franklin | 40 00 19 N | 083 01 43 W |
| Voight Hall | Building | 212 | Athens | 39 19 41 N | 082 05 59 W |
| Vontz Center for Molecular Studies | Building | 226 | Hamilton | 39 08 09 N | 084 30 21 W |
| W D Packard Music Hall | Building | 274 | Trumbull | 41 15 04 N | 080 49 49 W |
| W Robert and Marilyn Y Brewer Lecture Hall | Building | 238 | Hancock | 41 03 16 N | 083 39 20 W |
| Wadsworth City Hall | Building | 358 | Medina | 41 01 36 N | 081 43 45 W |
| Wagner Hall | Building | 339 | Wayne | 40 48 49 N | 081 55 55 W |
| Waite Hill Village Hall | Building | 239 | Lake | 41 36 18 N | 081 23 05 W |
| Walbridge Branch Wood County District Public Library | Building | 188 | Wood | 41 35 18 N | 083 29 35 W |