Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Auburn Cemetery | Cemetery | 342 | Highland | 39 17 32 N | 083 37 56 W |
| Auburn Center | Populated Place | 306 | Crawford | 40 56 42 N | 082 44 37 W |
| Auburn Center | Populated Place | 376 | Geauga | 41 23 14 N | 081 14 46 W |
| Auburn Center Cemetery | Cemetery | 376 | Geauga | 41 23 17 N | 081 14 44 W |
| Auburn Church | Church | 342 | Highland | 39 17 32 N | 083 37 55 W |
| Auburn Corners | Populated Place | 368 | Geauga | 41 23 14 N | 081 12 58 W |
| Auburn Elementary School | School | 378 | Geauga | 41 23 12 N | 081 14 42 W |
| Auburn Elementary School | School | 338 | Richland | 40 53 01 N | 082 40 27 W |
| Auburn Methodist Episcopal Church (historical) | Church | 233 | Butler | 39 25 10 N | 084 28 08 W |
| Auburn Middle School | School | 219 | Lake | 41 41 20 N | 081 14 39 W |
| Auburn Science and Engineering Center | Building | 317 | Summit | 41 04 34 N | 081 30 50 W |
| Auburn State Wildlife Area | Park | 362 | Geauga | 41 23 56 N | 081 14 24 W |
| Auburndale | Populated Place | 187 | Lucas | 41 41 14 N | 083 35 39 W |
| Auburndale Post Office (historical) | Post Office | 186 | Lucas | 41 41 15 N | 083 35 40 W |
| Audubon Islands Nature Preserve | Park | 174 | Lucas | 41 34 00 N | 083 38 11 W |
| Audubon Junior High School | School | 265 | Cuyahoga | 41 28 31 N | 081 36 33 W |
| Audubon Park | Park | 260 | Franklin | 40 01 09 N | 082 59 32 W |
| Augenstein Cemetery | Cemetery | 288 | Marion | 40 29 28 N | 083 05 18 W |
| Augerburg | Populated Place | 338 | Portage | 41 09 47 N | 081 10 02 W |
| Auglaize Cemetery | Cemetery | 304 | Allen | 40 40 52 N | 083 56 14 W |
| Auglaize Chapel | Church | 218 | Paulding | 41 02 53 N | 084 23 16 W |
| Auglaize Chapel Cemetery | Cemetery | 215 | Paulding | 41 02 53 N | 084 23 18 W |
| Auglaize Church | Church | 305 | Allen | 40 40 50 N | 083 56 15 W |
| Auglaize Church | Church | 286 | Auglaize | 40 37 43 N | 084 07 20 W |
| Auglaize County | Civil | 268 | Auglaize | 40 33 00 N | 084 15 01 W |
| Auglaize County Courthouse | Building | 272 | Auglaize | 40 34 06 N | 084 11 40 W |
| Auglaize County District Library | Building | 271 | Auglaize | 40 33 58 N | 084 11 49 W |
| Auglaize County Fairgrounds | Locale | 272 | Auglaize | 40 33 47 N | 084 12 34 W |
| Auglaize County Home | Building | 275 | Auglaize | 40 35 32 N | 084 12 04 W |
| Auglaize County Jail | Building | 271 | Auglaize | 40 34 07 N | 084 11 47 W |
| Auglaize County Law Library | Building | 272 | Auglaize | 40 34 06 N | 084 11 40 W |
| Auglaize River | Stream | | Defiance | 41 17 15 N | 084 21 21 W |
| Auglaize School | School | 288 | Auglaize | 40 26 18 N | 084 22 45 W |
| Auglaize School (historical) | School | 301 | Allen | 40 41 16 N | 083 56 17 W |
| Auglaize School (historical) | School | 244 | Van Wert | 40 47 58 N | 084 28 32 W |
| Auglaize Township Hall | Building | 217 | Paulding | 41 11 39 N | 084 25 07 W |
| Augsberger Memorial Cemetery | Cemetery | 195 | Butler | 39 27 59 N | 084 28 42 W |
| Augsburg Church | Church | 231 | Hamilton | 39 17 40 N | 084 33 51 W |
| Augsburg Lutheran Church | Church | 184 | Lucas | 41 41 33 N | 083 34 24 W |
| Augspurger Cemetery | Cemetery | 193 | Butler | 39 28 33 N | 084 26 46 W |
| August Acres Airport | Airport | 334 | Delaware | 40 09 45 N | 082 46 55 W |
| Augusta | Populated Place | 374 | Carroll | 40 41 09 N | 081 01 15 W |
| Augusta Bar | Bar | 147 | Brown | 38 46 33 N | 084 01 50 W |
| Augusta Cemetery | Cemetery | 382 | Carroll | 40 41 17 N | 081 01 15 W |
| Augusta Elementary School | School | 378 | Carroll | 40 41 15 N | 081 01 26 W |
| Augusta Post Office | Post Office | 376 | Carroll | 40 41 10 N | 081 01 14 W |
| Augustine Cemetery | Cemetery | 213 | Athens | 39 22 35 N | 082 05 43 W |
| Augustus Cemetery | Cemetery | 315 | Fairfield | 39 34 04 N | 082 44 58 W |
| Aukerman | Populated Place | 282 | Wayne | 40 57 35 N | 082 01 30 W |
| Aukerman Cemetery | Cemetery | 331 | Wayne | 40 56 25 N | 082 02 33 W |
| Aukerman Church | Church | 283 | Wayne | 40 56 55 N | 082 01 53 W |
| Aukerman Creek | Stream | | Preble | 39 39 26 N | 084 30 46 W |
| Ault Park | Park | 193 | Hamilton | 39 08 09 N | 084 24 41 W |
| Aultman | Populated Place | 336 | Stark | 40 55 42 N | 081 25 02 W |
| Aultman Hospital | Hospital | 334 | Stark | 40 47 46 N | 081 24 16 W |
| Aultman Post Office (historical) | Post Office | 335 | Stark | 40 55 40 N | 081 25 04 W |
| Aults Run | Stream | | Belmont | 40 02 49 N | 080 51 29 W |
| Aumend Ditch | Canal | 199 | Lucas | 41 29 32 N | 083 50 47 W |
| Aumiller Creek | Stream | | Meigs | 39 01 52 N | 081 54 44 W |
| Aumiller Park | Park | 297 | Crawford | 40 48 13 N | 082 59 20 W |
| Aurand Cemetery | Cemetery | 239 | Hancock | 41 01 47 N | 083 42 53 W |
| Aurand Run | Stream | | Hancock | 41 02 57 N | 083 43 43 W |
| Aurora | Populated Place | 345 | Portage | 41 19 03 N | 081 20 43 W |
| Aurora Branch | Stream | | Geauga | 41 25 22 N | 081 24 42 W |
| Aurora Cemetery | Cemetery | 354 | Portage | 41 18 53 N | 081 20 56 W |
| Aurora Center Historic District | Park | 344 | Portage | 41 18 55 N | 081 20 44 W |
| Aurora Country Club | Locale | 340 | Portage | 41 18 54 N | 081 19 58 W |
| Aurora High School | School | 350 | Portage | 41 18 28 N | 081 21 07 W |
| Aurora Pond | Reservoir | 304 | Portage | 41 19 30 N | 081 23 35 W |
| Aurora Pond Dam | Dam | 304 | Portage | 41 19 30 N | 081 23 35 W |
| Aurora Post Office | Post Office | 343 | Portage | 41 19 05 N | 081 20 44 W |
| Aurora Post Office (historical) | Post Office | 343 | Portage | 41 19 05 N | 081 20 44 W |
| Aurora Station (historical) | Locale | 337 | Portage | 41 19 02 N | 081 20 04 W |
| Aurora Upper Intermediate School | School | 323 | Cuyahoga | 41 24 49 N | 081 30 33 W |
| Ausbergers Creek | Stream | | Warren | 39 27 54 N | 084 20 23 W |
| Austin | Populated Place | 230 | Ross | 39 26 12 N | 083 13 21 W |
| Austin Cemetery | Cemetery | 246 | Ashtabula | 41 46 29 N | 080 51 21 W |
| Austin Cemetery | Cemetery | 164 | Lawrence | 38 33 55 N | 082 46 36 W |
| Austin Cemetery | Cemetery | 267 | Meigs | 39 02 47 N | 082 01 37 W |
| Austin Chapel | Church | 230 | Ross | 39 26 32 N | 083 13 51 W |
| Austin Hall | Building | 317 | Clinton | 39 26 33 N | 083 49 01 W |
| Austin Hall | Building | 282 | Delaware | 40 18 06 N | 083 04 38 W |
| Austin Island | Island | 295 | Clinton | 39 23 07 N | 083 53 37 W |
| Austin Post Office (historical) | Post Office | 230 | Ross | 39 26 10 N | 083 13 20 W |
| Austin Village | Populated Place | 275 | Trumbull | 41 14 33 N | 080 51 33 W |
| Austin Village Baptist Church | Church | 275 | Trumbull | 41 14 25 N | 080 51 36 W |
| Austin-Magie Farm and Mill Historic District | Park | 245 | Butler | 39 31 24 N | 084 44 08 W |
| Austinburg | Populated Place | 247 | Ashtabula | 41 46 19 N | 080 51 16 W |
| Austinburg Center Cemetery | Cemetery | 247 | Ashtabula | 41 45 12 N | 080 51 11 W |
| Austinburg Elementary School | School | 249 | Ashtabula | 41 46 17 N | 080 51 42 W |
| Austinburg First United Church of Christ | Church | 247 | Ashtabula | 41 46 17 N | 080 51 22 W |
| Austinburg Post Office | Post Office | 247 | Ashtabula | 41 46 20 N | 080 51 19 W |
| Austinburg Township Park | Park | 247 | Ashtabula | 41 46 27 N | 080 51 18 W |
| Austinburg Township Park-Tote Road | Park | 232 | Ashtabula | 41 45 28 N | 080 53 29 W |
| Austintown | Populated Place | 344 | Mahoning | 41 06 06 N | 080 45 52 W |
| Austintown Baptist Church | Church | 343 | Mahoning | 41 05 20 N | 080 43 59 W |
| Austintown Branch Library | Building | 343 | Mahoning | 41 06 00 N | 080 46 06 W |
| Austintown Community Church | Church | 347 | Mahoning | 41 05 50 N | 080 45 50 W |
| Austintown Middle School | School | 338 | Mahoning | 41 06 02 N | 080 46 16 W |
| Austintown Plaza Shopping Center | Locale | 332 | Mahoning | 41 06 05 N | 080 46 29 W |
| Austintown Post Office (historical) | Post Office | 343 | Mahoning | 41 06 05 N | 080 45 54 W |
| Authors Grove | Woods | 249 | Hamilton | 39 07 02 N | 084 29 27 W |
| Autin Cemetery | Cemetery | 347 | Morrow | 40 42 44 N | 082 49 35 W |
| Autolite Heliport | Airport | 230 | Seneca | 41 10 45 N | 083 24 55 W |
| Autumn Acres | Populated Place | 258 | Hamilton | 39 13 26 N | 084 36 19 W |
| Ava | Populated Place | 232 | Noble | 39 49 54 N | 081 34 29 W |
| Ava Post Office | Post Office | 233 | Noble | 39 49 55 N | 081 34 29 W |
| Avalon | Populated Place | 200 | Butler | 39 31 51 N | 084 22 44 W |
| Avalon Elementary School | School | 268 | Franklin | 40 04 33 N | 082 57 09 W |
| Avalon Golf Course | Locale | 325 | Trumbull | 41 14 00 N | 080 42 54 W |