Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Terry Hill Cemetery | Cemetery | 273 | Wyandot | 40 41 18 N | 083 24 33 W |
| Terwilligers Pond | Lake | 175 | Ottawa | 41 39 23 N | 082 49 39 W |
| Testament Worship Center | Church | 180 | Hamilton | 39 09 37 N | 084 23 30 W |
| Tew Cemetery | Cemetery | 206 | Sandusky | 41 22 03 N | 082 51 25 W |
| Texas | Populated Place | 202 | Henry | 41 25 25 N | 083 57 06 W |
| Texas Cemetery | Cemetery | 331 | Clinton | 39 26 13 N | 083 42 14 W |
| Texas Cemetery | Cemetery | 203 | Henry | 41 25 43 N | 083 57 14 W |
| Texas Creek | Stream | | Monroe | 39 38 28 N | 080 52 16 W |
| Texas Hollow | Valley | | Lawrence | 38 39 46 N | 082 39 24 W |
| Texas Post Office (historical) | Post Office | 202 | Henry | 41 25 25 N | 083 57 05 W |
| Texas Road Wildlife Area | Park | 237 | Gallia | 38 48 57 N | 082 12 60 W |
| Texas School (historical) | School | 262 | Wyandot | 40 53 27 N | 083 26 04 W |
| Texas Township Cemetery | Cemetery | 286 | Crawford | 40 55 37 N | 083 05 55 W |
| Thacher | Populated Place | 260 | Pickaway | 39 33 49 N | 082 53 03 W |
| Thackery | Populated Place | 339 | Champaign | 40 03 20 N | 083 55 08 W |
| Thackery Ditch | Canal | 342 | Clark | 40 01 04 N | 083 56 60 W |
| Thackery Post Office (historical) | Post Office | 339 | Champaign | 40 03 20 N | 083 55 10 W |
| Tharp Hollow | Valley | | Morgan | 39 28 09 N | 081 56 00 W |
| Tharps Run Cemetery | Cemetery | 373 | Logan | 40 19 25 N | 083 41 41 W |
| Thatcher Post Office (historical) | Post Office | 260 | Pickaway | 39 33 50 N | 082 53 05 W |
| Thatcher Ridge | Ridge | 318 | Scioto | 38 54 30 N | 083 11 07 W |
| Thayer Street Church of Christ | Church | 304 | Summit | 41 06 10 N | 081 30 32 W |
| The Angle | Populated Place | 185 | Cuyahoga | 41 29 37 N | 081 42 17 W |
| The Apostolic Church | Church | 180 | Butler | 39 24 14 N | 084 33 28 W |
| The Arch | Park | 224 | Franklin | 39 57 59 N | 083 00 14 W |
| The Bend | Populated Place | 213 | Defiance | 41 17 02 N | 084 30 56 W |
| The Bend Post Office (historical) | Post Office | 215 | Defiance | 41 17 00 N | 084 30 55 W |
| The Boardwalk | Locale | 174 | Ottawa | 41 39 15 N | 082 49 11 W |
| The Bogs | Swamp | 174 | Sandusky | 41 26 20 N | 082 59 17 W |
| The Centre City Mall Shopping Center | Locale | 379 | Logan | 40 21 36 N | 083 45 34 W |
| The Chapel in Huron | Church | 181 | Erie | 41 24 21 N | 082 35 10 W |
| The Chapel in Ohmer Park | Church | 283 | Montgomery | 39 44 28 N | 084 09 16 W |
| The Church at Akron | Church | 342 | Summit | 41 04 00 N | 081 30 04 W |
| The Church of Jesus Christ | Church | 191 | Lorain | 41 26 46 N | 082 09 56 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 198 | Athens | 39 27 13 N | 082 13 32 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 180 | Butler | 39 20 48 N | 084 33 36 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 326 | Clark | 39 59 13 N | 083 46 56 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 213 | Defiance | 41 16 32 N | 084 22 08 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 230 | Franklin | 40 02 02 N | 083 01 58 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 231 | Fulton | 41 31 53 N | 084 13 40 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 210 | Hamilton | 39 10 29 N | 084 26 37 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 220 | Jackson | 39 01 51 N | 082 38 16 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 220 | Lorain | 41 22 54 N | 082 07 29 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 176 | Lucas | 41 43 17 N | 083 28 11 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 191 | Lucas | 41 36 41 N | 083 39 25 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 265 | Ross | 39 19 47 N | 082 59 51 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 241 | Williams | 41 28 07 N | 084 34 26 W |
| The Church on 94 | Church | 301 | Wayne | 40 57 09 N | 081 46 57 W |
| The College of Steubenville | School | 320 | Jefferson | 40 22 35 N | 080 37 22 W |
| The Colony Club Harbor | Harbor | 174 | Ottawa | 41 33 15 N | 082 51 17 W |
| The Colony Club Harbor | Locale | 174 | Ottawa | 41 33 15 N | 082 51 20 W |
| The Columbus Academy | School | 229 | Franklin | 39 57 43 N | 082 56 54 W |
| The Continent Shopping Center | Locale | 279 | Franklin | 40 05 37 N | 082 59 30 W |
| The Country Church | Church | 369 | Portage | 41 19 42 N | 081 16 54 W |
| The Coupling Reserve | Park | 176 | Erie | 41 19 29 N | 082 35 30 W |
| The Courtyard | Park | 238 | Franklin | 39 57 22 N | 082 56 13 W |
| The Crown | Building | 149 | Hamilton | 39 05 52 N | 084 30 17 W |
| The Eastern | Populated Place | 285 | Jefferson | 40 29 49 N | 080 53 45 W |
| The Estates of Fort Meigs (subdivision) | Populated Place | 193 | Wood | 41 32 52 N | 083 39 04 W |
| The Farm Heliport | Airport | 254 | Clark | 39 51 45 N | 084 02 30 W |
| The Flats | Flat | 177 | Cuyahoga | 41 29 25 N | 081 41 29 W |
| The Franciscan Center | Building | 202 | Lucas | 41 42 32 N | 083 42 26 W |
| The Galleria at Erieview Shopping Center | Locale | 197 | Cuyahoga | 41 30 17 N | 081 41 21 W |
| The Golf Club | Locale | 323 | Franklin | 40 04 10 N | 082 47 10 W |
| The Gulf | Valley | | Hocking | 39 25 54 N | 082 32 47 W |
| The Gulf Trail | Trail | 216 | Hocking | 39 25 33 N | 082 33 48 W |
| The Hamlet | Populated Place | 189 | Wood | 41 34 55 N | 083 35 53 W |
| The Harvesters Chapel | Church | 225 | Montgomery | 39 44 45 N | 084 10 60 W |
| The Heights Jewish Center | Building | 265 | Cuyahoga | 41 30 47 N | 081 34 22 W |
| The Highlands | Populated Place | 237 | Clermont | 39 12 46 N | 084 16 16 W |
| The Highlands | Summit | 310 | Muskingum | 40 06 30 N | 082 05 17 W |
| The House of Deliverance Church | Church | 304 | Greene | 39 41 21 N | 083 54 38 W |
| The Inlet | Stream | | Medina | 41 04 25 N | 081 54 35 W |
| The Jones Home School and Home for Friendless Children | Building | 210 | Cuyahoga | 41 27 30 N | 081 42 06 W |
| The Knob | Summit | 378 | Lake | 41 38 34 N | 081 15 51 W |
| The Knobs | Summit | 380 | Clark | 39 58 14 N | 083 39 53 W |
| The Knolls | Populated Place | 338 | Clark | 40 00 49 N | 083 44 10 W |
| The Knolls (subdivision) | Populated Place | 331 | Stark | 40 51 30 N | 081 23 22 W |
| The Lakes Country Club | Locale | 274 | Delaware | 40 09 47 N | 082 56 20 W |
| The Lane Metropolitan Christian Methodist Episcopal Church | Church | 203 | Cuyahoga | 41 30 02 N | 081 39 16 W |
| The Ledges | Bench | 361 | Geauga | 41 41 28 N | 081 04 05 W |
| The Little Building | Building | 232 | Columbiana | 40 37 13 N | 080 34 45 W |
| The Little Family Church | Church | 299 | Butler | 39 32 43 N | 084 31 10 W |
| The Lords House of Prayer | Church | 228 | Franklin | 39 55 58 N | 082 59 17 W |
| The Lower Lake | Reservoir | 406 | Logan | 40 21 48 N | 083 41 60 W |
| The Mall | Park | 198 | Cuyahoga | 41 30 08 N | 081 41 36 W |
| The Maples | Populated Place | 265 | Mercer | 40 30 10 N | 084 30 13 W |
| The Masters Church | Church | 192 | Cuyahoga | 41 36 23 N | 081 30 08 W |
| The Meadows | Populated Place | 207 | Gallia | 38 49 23 N | 082 16 45 W |
| The Meadows | Populated Place | 184 | Wood | 41 35 42 N | 083 26 37 W |
| The Meadows Picnic Area | Locale | 268 | Franklin | 39 56 23 N | 082 48 48 W |
| The Meadows Retention Dam | Dam | 310 | Summit | 41 10 24 N | 081 27 59 W |
| The Meadows Retention Pond | Reservoir | 310 | Summit | 41 10 24 N | 081 27 59 W |
| The Ministry of the Two Witnesses Church | Church | 151 | Hamilton | 39 08 24 N | 084 43 02 W |
| The Narrows | Channel | 293 | Greene | 39 47 52 N | 083 49 47 W |
| The Narrows State Scenic River Reserve | Park | 237 | Greene | 39 41 03 N | 084 02 12 W |
| The New Church of Christ | Church | 231 | Franklin | 39 57 18 N | 082 57 13 W |
| The Offices at North High Place | Locale | 315 | Franklin | 40 05 04 N | 082 48 28 W |
| The Orchard Office Park | Locale | 264 | Hamilton | 39 14 17 N | 084 22 60 W |
| The Outlet | Canal | 242 | Hancock | 41 01 03 N | 083 26 13 W |
| The Outlet | Stream | | Hardin | 40 47 50 N | 083 33 15 W |
| The Pines | Populated Place | 262 | Hamilton | 39 06 53 N | 084 37 44 W |
| The Pinnacle | Summit | 319 | Vinton | 39 15 18 N | 082 24 04 W |
| The Pit | Park | | Hamilton | 39 06 40 N | 084 34 51 W |
| The Plains | Flat | 241 | Coshocton | 40 16 32 N | 081 41 23 W |
| The Plains | Flat | 328 | Holmes | 40 35 20 N | 081 48 32 W |
| The Plains | Populated Place | 218 | Athens | 39 22 08 N | 082 07 57 W |
| The Plains Elementary School | School | 217 | Athens | 39 22 00 N | 082 07 51 W |
| The Plains Post Office | Post Office | 218 | Athens | 39 22 10 N | 082 07 60 W |
| The Plains School | School | 299 | Madison | 39 51 32 N | 083 17 04 W |