Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Amvet Village Park | Park | 246 | Franklin | 40 00 01 N | 082 56 41 W |
| Amvet Village Park | Park | 245 | Franklin | 39 59 59 N | 082 56 40 W |
| Amwell Post Office (historical) | Post Office | 295 | Wayne | 40 57 38 N | 081 50 30 W |
| Anchor Point | Cape | 175 | Erie | 41 23 37 N | 082 33 17 W |
| Anchor Point Marina | Locale | 175 | Lucas | 41 40 19 N | 083 17 10 W |
| Anchor Post Office (historical) | Post Office | 255 | Columbiana | 40 46 25 N | 080 32 29 W |
| Ancor | Populated Place | 164 | Hamilton | 39 08 14 N | 084 19 04 W |
| Anders Cemetery | Cemetery | 315 | Fayette | 39 23 37 N | 083 31 28 W |
| Anderson | Populated Place | 178 | Erie | 41 23 20 N | 082 31 45 W |
| Anderson | Populated Place | 208 | Ross | 39 21 39 N | 083 04 14 W |
| Anderson (historical) | Populated Place | 303 | Ashtabula | 41 44 20 N | 080 37 20 W |
| Anderson Airport | Airport | 244 | Fairfield | 39 50 00 N | 082 43 60 W |
| Anderson Arena | Building | 209 | Wood | 41 22 37 N | 083 38 12 W |
| Anderson Cemetery | Cemetery | 244 | Coshocton | 40 09 59 N | 082 10 10 W |
| Anderson Cemetery | Cemetery | 302 | Fayette | 39 27 09 N | 083 27 56 W |
| Anderson Cemetery | Cemetery | 246 | Gallia | 38 59 03 N | 082 24 51 W |
| Anderson Cemetery | Cemetery | 277 | Mercer | 40 26 08 N | 084 47 27 W |
| Anderson Cemetery | Cemetery | 344 | Miami | 40 10 17 N | 084 03 46 W |
| Anderson Cemetery | Cemetery | 217 | Morgan | 39 43 15 N | 081 53 31 W |
| Anderson Chapel African Methodist Episcopal Church | Church | 181 | Hamilton | 39 09 43 N | 084 23 31 W |
| Anderson Creek | Stream | | Champaign | 40 04 17 N | 083 48 49 W |
| Anderson Ferry | Crossing | 133 | Hamilton | 39 04 24 N | 084 37 31 W |
| Anderson Ferry | Populated Place | 161 | Hamilton | 39 04 41 N | 084 37 19 W |
| Anderson Field | Park | 190 | Sandusky | 41 21 40 N | 083 08 09 W |
| Anderson Fork | Stream | | Clinton | 39 33 55 N | 083 58 11 W |
| Anderson Hall | Building | 198 | Athens | 39 19 30 N | 082 06 13 W |
| Anderson Hall | Building | 268 | Butler | 39 30 07 N | 084 44 09 W |
| Anderson Hall | Building | 207 | Wood | 41 22 31 N | 083 37 54 W |
| Anderson High School | School | 298 | Columbiana | 40 46 18 N | 080 46 19 W |
| Anderson High School | School | 244 | Hamilton | 39 04 10 N | 084 20 55 W |
| Anderson Hollow | Valley | | Morgan | 39 29 11 N | 081 57 48 W |
| Anderson Mill (historical) | Locale | 271 | Madison | 39 47 22 N | 083 18 05 W |
| Anderson Mine | Mine | 379 | Harrison | 40 17 02 N | 081 00 31 W |
| Anderson Office Park | Locale | 260 | Hamilton | 39 04 25 N | 084 19 40 W |
| Anderson Park | Park | 192 | Hamilton | 39 07 21 N | 084 26 45 W |
| Anderson Pike (historical) | Locale | 317 | Highland | 39 13 38 N | 083 45 05 W |
| Anderson Place Elementary School | School | 177 | Hamilton | 39 09 46 N | 084 24 02 W |
| Anderson Post Office (historical) | Post Office | 208 | Ross | 39 21 40 N | 083 04 15 W |
| Anderson Run | Stream | | Belmont | 39 54 54 N | 080 55 44 W |
| Anderson Run | Stream | | Belmont | 40 01 46 N | 080 56 14 W |
| Anderson Run | Stream | | Licking | 40 13 36 N | 082 12 16 W |
| Anderson Run | Stream | | Ross | 39 21 56 N | 083 05 10 W |
| Anderson School | School | 296 | Cuyahoga | 41 32 05 N | 081 30 10 W |
| Anderson School | School | 347 | Wayne | 40 46 12 N | 081 47 06 W |
| Anderson School (historical) | School | 388 | Ashland | 40 50 30 N | 082 21 31 W |
| Anderson School (historical) | School | 315 | Greene | 39 41 18 N | 083 49 15 W |
| Anderson School (historical) | School | 245 | Guernsey | 40 10 46 N | 081 33 17 W |
| Anderson School (historical) | School | 305 | Morgan | 39 33 21 N | 081 49 43 W |
| Anderson School (historical) | School | 294 | Muskingum | 40 02 45 N | 081 47 42 W |
| Anderson School (historical) | School | 187 | Pike | 39 05 47 N | 083 10 49 W |
| Anderson School (historical) | School | 238 | Vinton | 39 21 32 N | 082 37 11 W |
| Andersons Ferry Marina | Locale | 141 | Hamilton | 39 04 35 N | 084 37 33 W |
| Andersons Ferry Post Office (historical) | Post Office | 154 | Hamilton | 39 04 40 N | 084 37 20 W |
| Andersons Run | Stream | | Mahoning | 41 02 55 N | 080 41 00 W |
| Andersonville | Populated Place | 280 | Brown | 39 02 27 N | 083 59 13 W |
| Andersonville | Populated Place | 198 | Ross | 39 25 40 N | 083 00 35 W |
| Andersonville Post Office (historical) | Post Office | 200 | Ross | 39 25 42 N | 083 00 37 W |
| Andis | Populated Place | 205 | Lawrence | 38 33 03 N | 082 31 24 W |
| Andis Elementary School | School | 206 | Lawrence | 38 33 02 N | 082 31 22 W |
| Andis Post Office (historical) | Post Office | 216 | Lawrence | 38 33 05 N | 082 31 25 W |
| Andover | Populated Place | 333 | Ashtabula | 41 36 24 N | 080 34 20 W |
| Andover Cemetery | Cemetery | 335 | Ashtabula | 41 36 22 N | 080 34 11 W |
| Andover Post Office | Post Office | 332 | Ashtabula | 41 36 25 N | 080 34 19 W |
| Andover Public Library | Building | 333 | Ashtabula | 41 36 26 N | 080 34 22 W |
| Andre | Populated Place | 188 | Scioto | 38 44 50 N | 082 44 05 W |
| Andreas School (historical) | School | 322 | Tuscarawas | 40 26 10 N | 081 38 33 W |
| Andrew Hollow | Valley | | Pike | 38 58 53 N | 082 53 56 W |
| Andrew J Rickoff Elementary School | School | 286 | Cuyahoga | 41 27 48 N | 081 34 48 W |
| Andrew Raber Farm Cemetery | Cemetery | 347 | Holmes | 40 30 15 N | 081 49 06 W |
| Andrews Cemetery | Cemetery | 378 | Ashland | 40 48 53 N | 082 22 07 W |
| Andrews Cemetery | Cemetery | 207 | Morgan | 39 35 44 N | 081 41 29 W |
| Andrews Creek | Stream | | Trumbull | 41 27 35 N | 080 56 22 W |
| Andrews Hall | Building | 349 | Ashland | 40 51 45 N | 082 19 22 W |
| Andrews Hall | Building | 189 | Washington | 39 24 58 N | 081 26 59 W |
| Andrews Hall | Building | 332 | Wayne | 40 48 48 N | 081 56 15 W |
| Andrews Junior High School | School | 300 | Stark | 40 47 28 N | 081 31 51 W |
| Andrews Library | Building | 330 | Wayne | 40 48 37 N | 081 56 05 W |
| Andrews Run | Stream | | Morgan | 39 35 32 N | 081 41 09 W |
| Andrews School | School | 210 | Lake | 41 38 25 N | 081 23 47 W |
| Andrews School (historical) | School | 231 | Adams | 39 00 42 N | 083 24 33 W |
| Andrews School (historical) | School | 274 | Preble | 39 39 23 N | 084 34 28 W |
| Andy Barnhart Memorial Airport | Airport | 273 | Clark | 39 55 51 N | 084 00 49 W |
| Angel | Populated Place | 172 | Gallia | 38 43 15 N | 082 16 10 W |
| Angel Cemetery | Cemetery | 275 | Athens | 39 15 46 N | 082 02 52 W |
| Angel Hollow | Valley | | Scioto | 38 41 21 N | 082 47 59 W |
| Angel Post Office (historical) | Post Office | 172 | Gallia | 38 43 15 N | 082 16 10 W |
| Angel Ridge | Ridge | 294 | Athens | 39 17 18 N | 082 03 52 W |
| Angel Ridge Church | Church | 281 | Athens | 39 16 11 N | 082 03 15 W |
| Angel School (historical) | School | 294 | Tuscarawas | 40 24 22 N | 081 35 21 W |
| Angel Street Cemetery | Cemetery | 309 | Shelby | 40 17 07 N | 084 18 11 W |
| Angel Valley | Valley | | Tuscarawas | 40 24 53 N | 081 33 26 W |
| Angell Cemetery | Cemetery | 207 | Henry | 41 19 04 N | 083 53 25 W |
| Angevine School (historical) | School | 349 | Licking | 40 01 27 N | 082 40 17 W |
| Angler Paradise Lake | Reservoir | 252 | Fairfield | 39 39 18 N | 082 29 42 W |
| Angler Paradise Lake Dam | Dam | 252 | Fairfield | 39 39 18 N | 082 29 42 W |
| Angola (historical) | Populated Place | 169 | Gallia | 38 41 38 N | 082 11 29 W |
| Angola Post Office (historical) | Post Office | 171 | Gallia | 38 41 40 N | 082 11 30 W |
| Angus | Populated Place | 224 | Seneca | 41 11 48 N | 083 17 06 W |
| Angus Post Office (historical) | Post Office | 224 | Seneca | 41 11 50 N | 083 17 05 W |
| Ankeny School (historical) | School | 267 | Tuscarawas | 40 26 45 N | 081 30 43 W |
| Ankenytown | Populated Place | 348 | Knox | 40 32 03 N | 082 30 18 W |
| Ankenytown Cemetery | Cemetery | 353 | Knox | 40 32 18 N | 082 30 05 W |
| Ankenytown Post Office (historical) | Post Office | 353 | Knox | 40 32 05 N | 082 30 20 W |
| Ankerman Creek | Stream | | Auglaize | 40 36 24 N | 084 19 42 W |
| Ankney Cemetery | Cemetery | 218 | Paulding | 41 11 06 N | 084 31 26 W |
| Ankrims Run | Stream | | Lawrence | 38 24 15 N | 082 33 24 W |
| Ankrom Hollow | Valley | | Ross | 39 13 28 N | 082 54 45 W |
| Anlo | Populated Place | 292 | Clark | 39 56 23 N | 083 56 48 W |
| Anlo Post Office (historical) | Post Office | 292 | Clark | 39 56 25 N | 083 56 50 W |
| Anna | Populated Place | 315 | Shelby | 40 23 40 N | 084 10 22 W |