Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Straight Fork Run | Stream | | Monroe | 39 41 01 N | 081 12 06 W |
| Straight Hollow Run | Stream | | Meigs | 39 02 46 N | 081 55 16 W |
| Straight Run | Stream | | Washington | 39 34 17 N | 081 32 44 W |
| Straight Run School (historical) | School | 200 | Washington | 39 34 16 N | 081 33 23 W |
| Strain Cemetery | Cemetery | 338 | Highland | 39 12 37 N | 083 39 46 W |
| Strait Creek | Stream | | Highland | 39 03 23 N | 083 23 59 W |
| Strait Creek Cemetery | Cemetery | 223 | Highland | 39 03 27 N | 083 23 47 W |
| Strait Creek Church | Church | 219 | Highland | 39 03 24 N | 083 23 31 W |
| Strait School (historical) | School | 296 | Perry | 39 43 52 N | 082 13 56 W |
| Straitgate Church | Church | 250 | Hamilton | 39 11 12 N | 084 25 10 W |
| Straits Lake | Reservoir | 358 | Morrow | 40 32 06 N | 082 46 42 W |
| Straits Lake Dam | Dam | 358 | Morrow | 40 32 06 N | 082 46 42 W |
| Straitsville | Populated Place | 298 | Perry | 39 35 41 N | 082 14 45 W |
| Straker School (historical) | School | 305 | Darke | 40 18 25 N | 084 29 43 W |
| Strakers (historical) | Populated Place | 306 | Darke | 40 18 22 N | 084 29 44 W |
| Stranahan Building | Building | 181 | Lucas | 41 39 15 N | 083 31 58 W |
| Stranahan Elementary School | School | 197 | Lucas | 41 41 18 N | 083 40 55 W |
| Stranahan Hall | Building | 183 | Lucas | 41 39 43 N | 083 36 46 W |
| Strand Building | Building | 168 | Hamilton | 39 06 08 N | 084 30 42 W |
| Strange Cemetery | Cemetery | 317 | Highland | 39 11 31 N | 083 44 03 W |
| Strasburg | Populated Place | 278 | Tuscarawas | 40 35 41 N | 081 31 36 W |
| Strasburg Industrial Park | Locale | 280 | Tuscarawas | 40 36 43 N | 081 31 50 W |
| Strasburg United Methodist Church | Church | 288 | Tuscarawas | 40 35 52 N | 081 31 46 W |
| Strasburg-Franklin Elementary School | School | 287 | Tuscarawas | 40 35 51 N | 081 31 50 W |
| Strasburg-Franklin High School | School | 287 | Tuscarawas | 40 35 48 N | 081 31 50 W |
| Stratford | Populated Place | 255 | Delaware | 40 15 22 N | 083 03 49 W |
| Stratford Church | Church | 274 | Delaware | 40 16 04 N | 083 04 11 W |
| Stratford Manor | Populated Place | 183 | Hamilton | 39 10 02 N | 084 24 36 W |
| Stratford Place Shopping Center | Locale | 339 | Summit | 41 10 55 N | 081 26 23 W |
| Stratford Post Office (historical) | Post Office | 253 | Delaware | 40 15 20 N | 083 03 50 W |
| Stratton | Populated Place | 190 | Jefferson | 40 31 18 N | 080 37 34 W |
| Stratton Creek | Stream | | Trumbull | 41 26 05 N | 080 34 51 W |
| Stratton Post Office | Post Office | 189 | Jefferson | 40 31 20 N | 080 37 34 W |
| Strattons Heliport | Airport | 231 | Cuyahoga | 41 20 24 N | 081 36 36 W |
| Strauss Ridge | Ridge | 288 | Scioto | 38 49 24 N | 082 52 08 W |
| Straw Ditch | Canal | 231 | Lorain | 41 20 42 N | 082 08 39 W |
| Strawberry Farms Park | Park | 238 | Franklin | 40 04 19 N | 082 55 15 W |
| Strawcamp Run | Stream | | Carroll | 40 31 31 N | 080 56 07 W |
| Strawman-Fleming Ditch | Canal | 353 | Portage | 41 15 24 N | 081 08 51 W |
| Strawn Cemetery | Cemetery | 334 | Hocking | 39 28 16 N | 082 28 40 W |
| Streator Park | Park | 185 | Lorain | 41 27 35 N | 082 10 31 W |
| Street Academy (historical) | School | 204 | Cuyahoga | 41 30 12 N | 081 37 45 W |
| Street School (historical) | School | 317 | Hardin | 40 35 39 N | 083 51 39 W |
| Streeter Ditch | Canal | 256 | Williams | 41 27 01 N | 084 48 04 W |
| Streetsboro | Populated Place | 345 | Portage | 41 14 21 N | 081 20 45 W |
| Streetsboro Cemetery | Cemetery | 344 | Portage | 41 14 08 N | 081 20 42 W |
| Streetsboro High School | School | 351 | Portage | 41 14 02 N | 081 19 31 W |
| Streetsboro Middle School | School | 349 | Portage | 41 14 08 N | 081 19 25 W |
| Streetsboro Post Office (historical) | Post Office | 344 | Portage | 41 14 20 N | 081 20 44 W |
| Stricker School (historical) | School | 326 | Knox | 40 17 27 N | 082 12 46 W |
| Strickland Cemetery | Cemetery | 383 | Ashland | 40 47 54 N | 082 18 21 W |
| Stringer | Populated Place | 197 | Jefferson | 40 13 58 N | 080 39 44 W |
| Stringtown | Populated Place | 193 | Athens | 39 18 05 N | 081 59 11 W |
| Stringtown | Populated Place | 282 | Brown | 39 07 03 N | 083 59 14 W |
| Stringtown | Populated Place | 161 | Brown | 38 45 38 N | 083 49 36 W |
| Stringtown | Populated Place | 269 | Clermont | 38 49 20 N | 084 05 54 W |
| Stringtown | Populated Place | 323 | Greene | 39 41 10 N | 083 50 47 W |
| Stringtown | Populated Place | 311 | Highland | 39 14 05 N | 083 29 18 W |
| Stringtown | Populated Place | 274 | Montgomery | 39 49 05 N | 084 18 44 W |
| Stringtown | Populated Place | 282 | Muskingum | 40 01 44 N | 082 00 50 W |
| Stringtown | Populated Place | 234 | Perry | 39 44 43 N | 082 05 18 W |
| Stringtown | Populated Place | 253 | Pickaway | 39 30 12 N | 082 46 27 W |
| Stringtown | Populated Place | 306 | Wayne | 40 41 00 N | 081 59 32 W |
| Stringtown (historical) | Populated Place | 247 | Coshocton | 40 11 15 N | 081 42 14 W |
| Stringtown (historical) | Populated Place | 308 | Marion | 40 40 28 N | 082 56 55 W |
| Stringtown (historical) | Populated Place | 198 | Monroe | 39 33 38 N | 081 00 50 W |
| Stringtown Park | Park | 288 | Montgomery | 39 36 34 N | 084 08 08 W |
| Stringtown Post Office (historical) | Post Office | 251 | Pickaway | 39 30 10 N | 082 46 25 W |
| Stringtown School (historical) | School | 300 | Brown | 39 11 33 N | 083 53 24 W |
| Stringtown School (historical) | School | 306 | Marion | 40 40 04 N | 082 56 55 W |
| Stringtown School (historical) | School | 250 | Mercer | 40 39 18 N | 084 37 41 W |
| Stripe Creek | Stream | | Van Wert | 40 54 35 N | 084 33 44 W |
| Striptown (historical) | Populated Place | 263 | Mercer | 40 35 21 N | 084 41 22 W |
| Strobel Field | Park | 182 | Erie | 41 26 05 N | 082 43 03 W |
| Stroh School (historical) | School | 275 | Auglaize | 40 31 06 N | 084 15 36 W |
| Stroman Lake Dam | Dam | 357 | Champaign | 40 09 06 N | 083 54 06 W |
| Strong Cemetery | Cemetery | 356 | Knox | 40 30 56 N | 082 36 41 W |
| Strong Creek | Stream | | Ashtabula | 41 53 28 N | 080 47 55 W |
| Strong Creek | Stream | | Sandusky | 41 24 34 N | 082 57 15 W |
| Strong Ditch | Canal | 208 | Lucas | 41 37 18 N | 083 51 24 W |
| Strong Tower Church of Christ | Church | 236 | Franklin | 39 59 08 N | 082 56 38 W |
| Strongs Ridge | Populated Place | 234 | Huron | 41 17 01 N | 082 47 11 W |
| Strongs Ridge | Ridge | 234 | Huron | 41 17 01 N | 082 47 13 W |
| Strongs Ridge Cemetery | Cemetery | 238 | Huron | 41 17 00 N | 082 46 59 W |
| Strongs Run | Stream | | Meigs | 39 00 34 N | 082 20 35 W |
| Strongsville | Populated Place | 284 | Cuyahoga | 41 18 52 N | 081 50 08 W |
| Strongsville Airport (historical) | Airport | 262 | Cuyahoga | 41 19 25 N | 081 51 46 W |
| Strongsville Business Park | Locale | 287 | Cuyahoga | 41 17 25 N | 081 51 55 W |
| Strongsville Cemetery | Cemetery | 273 | Cuyahoga | 41 19 07 N | 081 50 00 W |
| Strongsville City Hall | Building | 284 | Cuyahoga | 41 18 54 N | 081 49 58 W |
| Strongsville High School | School | 288 | Cuyahoga | 41 18 12 N | 081 50 44 W |
| Strongsville Industrial Park | Locale | 263 | Cuyahoga | 41 19 35 N | 081 51 04 W |
| Strongsville Plaza Shopping Center | Locale | 290 | Cuyahoga | 41 18 25 N | 081 50 00 W |
| Strongsville Post Office (historical) | Post Office | 295 | Cuyahoga | 41 18 00 N | 081 50 09 W |
| Strongsville South Plaza Shopping Center | Locale | 293 | Cuyahoga | 41 18 10 N | 081 50 09 W |
| Strongsville Wildlife Area | Park | 245 | Cuyahoga | 41 19 05 N | 081 48 34 W |
| Strosacker Auditorium | Building | 216 | Cuyahoga | 41 30 11 N | 081 36 25 W |
| Strosacker College Union | Building | 243 | Cuyahoga | 41 22 08 N | 081 50 54 W |
| Stroud Park | Park | 268 | Cuyahoga | 41 22 57 N | 081 45 23 W |
| Stroud School | School | 268 | Cuyahoga | 41 22 51 N | 081 45 20 W |
| Strouds Run | Stream | | Athens | 39 19 55 N | 082 01 07 W |
| Strouds Run Church | Church | 221 | Athens | 39 21 20 N | 082 02 07 W |
| Strouds Run Dam | Dam | 207 | Athens | 39 20 12 N | 082 01 06 W |
| Strouds Run State Park | Park | 214 | Athens | 39 20 57 N | 082 01 57 W |
| Stroup Cemetery | Cemetery | 308 | Highland | 39 13 10 N | 083 48 05 W |
| Stroup Hall | Building | 210 | Cuyahoga | 41 31 40 N | 081 35 06 W |
| Stroup School (historical) | School | 308 | Highland | 39 13 01 N | 083 48 12 W |
| Stroups | Populated Place | 262 | Trumbull | 41 20 21 N | 080 56 07 W |
| Struble Elementary School | School | 252 | Hamilton | 39 12 48 N | 084 34 44 W |
| Struble School (historical) | School | 210 | Henry | 41 17 52 N | 084 01 04 W |