Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Wildwood Park | Park | 338 | Stark | 40 50 22 N | 081 16 03 W |
| Wildwood Park (historical) | Park | 214 | Fulton | 41 34 35 N | 084 00 55 W |
| Wildwood Preserve Metropark | Park | 195 | Lucas | 41 41 05 N | 083 40 27 W |
| Wildwood School (historical) | School | 281 | Highland | 39 02 47 N | 083 32 28 W |
| Wildwood Springs (historical) | Populated Place | 250 | Franklin | 40 04 45 N | 082 54 60 W |
| Wildwood Trail | Trail | 352 | Highland | 39 07 05 N | 083 24 13 W |
| Wildwood Yacht Club | Locale | 181 | Cuyahoga | 41 35 17 N | 081 33 43 W |
| WILE-AM (Cambridge) | Tower | 348 | Guernsey | 40 02 24 N | 081 38 49 W |
| WILE-WGMS Radio Tower | Tower | 330 | Guernsey | 40 02 22 N | 081 38 41 W |
| Wiley (historical) | Populated Place | 332 | Darke | 39 56 00 N | 084 45 51 W |
| Wiley Junior High School | School | 317 | Cuyahoga | 41 29 58 N | 081 31 50 W |
| Wiley Post Office (historical) | Post Office | 333 | Darke | 39 56 00 N | 084 45 50 W |
| Wilgus | Populated Place | 243 | Lawrence | 38 37 18 N | 082 27 27 W |
| Wilgus Post Office (historical) | Post Office | 250 | Lawrence | 38 37 20 N | 082 27 25 W |
| Wilhelm Corner | Populated Place | 273 | Trumbull | 41 15 56 N | 080 46 28 W |
| Wilker Hall | Building | 241 | Cuyahoga | 41 22 27 N | 081 51 07 W |
| Wilkesville | Populated Place | 214 | Vinton | 39 04 28 N | 082 19 34 W |
| Wilkesville Cemetery | Cemetery | 232 | Vinton | 39 04 43 N | 082 19 37 W |
| Wilkin Cemetery | Cemetery | 317 | Highland | 39 06 38 N | 083 41 03 W |
| Wilkins | Populated Place | 205 | Lucas | 41 35 50 N | 083 50 44 W |
| Wilkins Air Force Station (historical) | Military (Historical) | | Richland | 40 54 01 N | 082 40 09 W |
| Wilkins Post Office (historical) | Post Office | 274 | Licking | 40 07 45 N | 082 20 40 W |
| Wilkins Run | Populated Place | 270 | Licking | 40 07 47 N | 082 20 39 W |
| Wilkins Run | Stream | | Licking | 40 07 47 N | 082 20 17 W |
| Wilkins United Methodist Church | Church | 204 | Lucas | 41 35 52 N | 083 50 42 W |
| Wilkshire Golf Course | Locale | 274 | Tuscarawas | 40 38 06 N | 081 26 52 W |
| Wilkshire Hills | Populated Place | 283 | Tuscarawas | 40 37 32 N | 081 26 05 W |
| Wilkson Cemetery | Cemetery | 338 | Champaign | 40 14 49 N | 083 56 42 W |
| Will Christy Park | Park | 321 | Summit | 41 05 54 N | 081 33 14 W |
| Will Grove Golf Club | Locale | 274 | Montgomery | 39 44 21 N | 084 06 30 W |
| Will-O-Bee on the Lake | Populated Place | 189 | Lake | 41 41 50 N | 081 23 59 W |
| Will-O-Bob Lake | Reservoir | 241 | Butler | 39 31 48 N | 084 28 54 W |
| Will-O-Bob Lake Dam | Dam | 241 | Butler | 39 31 48 N | 084 28 54 W |
| Will-O-Way Beach | Populated Place | 188 | Lake | 41 41 08 N | 081 24 44 W |
| Will-O-Wick | Populated Place | 189 | Lake | 41 39 34 N | 081 27 01 W |
| Will's Creek Post Office (historical) | Post Office | 234 | Coshocton | 40 10 50 N | 081 51 04 W |
| Willa Park | Park | 323 | Clark | 39 57 50 N | 083 46 48 W |
| Willard | Populated Place | 283 | Huron | 41 03 11 N | 082 43 35 W |
| Willard Airport | Airport | 289 | Huron | 41 02 19 N | 082 43 28 W |
| Willard City Reservoir | Reservoir | 281 | Huron | 41 03 24 N | 082 39 54 W |
| Willard City Upground Reservoir Dam | Dam | 281 | Huron | 41 03 24 N | 082 39 54 W |
| Willard Elementary School | School | 281 | Huron | 41 03 23 N | 082 43 46 W |
| Willard Elementary School (historical) | School | 229 | Montgomery | 39 44 47 N | 084 13 05 W |
| Willard High School | School | 288 | Huron | 41 02 51 N | 082 43 46 W |
| Willard Lake | Reservoir | 248 | Huron | 41 07 06 N | 082 42 60 W |
| Willard Lake Dam | Dam | 248 | Huron | 41 07 06 N | 082 42 60 W |
| Willard Marsh Wildlife Area | Park | 283 | Huron | 41 00 40 N | 082 45 60 W |
| Willard Park | Park | 195 | Cuyahoga | 41 30 20 N | 081 41 32 W |
| Willard Post Office | Post Office | 283 | Huron | 41 03 21 N | 082 43 34 W |
| Willard School | School | 214 | Cuyahoga | 41 28 13 N | 081 44 53 W |
| Willard School | School | 284 | Trumbull | 41 13 17 N | 080 47 19 W |
| Willard School (historical) | School | 307 | Fairfield | 39 49 36 N | 082 27 29 W |
| Willard United Church of Christ | Church | 341 | Summit | 41 03 55 N | 081 30 07 W |
| Willeke Field | Airport | 288 | Hancock | 40 49 20 N | 083 47 25 W |
| Willett Cemetery | Cemetery | 207 | Cuyahoga | 41 28 38 N | 081 42 37 W |
| Willetts Addition Comprehensive School | School | 342 | Medina | 41 14 33 N | 081 49 32 W |
| Willetts Middle School | School | 342 | Medina | 41 14 36 N | 081 49 30 W |
| Willettsville | Populated Place | 340 | Highland | 39 15 09 N | 083 42 10 W |
| Willettville Post Office (historical) | Post Office | 342 | Highland | 39 15 10 N | 083 42 10 W |
| Willey Creek | Stream | | Cuyahoga | 41 25 50 N | 081 25 00 W |
| Willey School (historical) | School | 281 | Licking | 40 09 15 N | 082 15 15 W |
| Willey School (historical) | School | 293 | Union | 40 27 16 N | 083 20 30 W |
| William A Harsha Lake Dam | Dam | 268 | Clermont | 38 57 12 N | 084 05 06 W |
| William B Brewer Science Hall | Building | 238 | Hancock | 41 03 15 N | 083 39 08 W |
| William Barr Elementary School | School | 190 | Lorain | 41 27 47 N | 082 06 52 W |
| William Bay Irvine Administration Building | Building | 189 | Washington | 39 24 59 N | 081 27 00 W |
| William Bick Elementary School | School | 267 | Clermont | 38 57 52 N | 084 05 36 W |
| William C Schenck Elementary School | School | 250 | Warren | 39 34 06 N | 084 17 21 W |
| William Cathcart Ditch | Canal | 318 | Madison | 39 44 20 N | 083 27 58 W |
| William Cullen Bryant Elementary School | School | 239 | Cuyahoga | 41 25 33 N | 081 42 22 W |
| William F Maag Library | Building | 276 | Mahoning | 41 06 16 N | 080 38 47 W |
| William Foster Elementary School | School | 285 | Cuyahoga | 41 24 54 N | 081 35 40 W |
| William H Harsha Lake | Reservoir | 193 | Clermont | 39 01 22 N | 084 08 60 W |
| William H Taft Historical Site | Park | 257 | Hamilton | 39 07 10 N | 084 30 30 W |
| William H Zimmer Nuclear Power Station | Locale | 39 | Clermont | 38 51 57 N | 084 13 44 W |
| William Henry Harrison High School | School | 178 | Hamilton | 39 15 19 N | 084 46 12 W |
| William Henry Harrison Park | Park | 198 | Wood | 41 24 08 N | 083 27 24 W |
| William Holmes McGuffey Elementary School | School | 208 | Cuyahoga | 41 29 16 N | 081 42 35 W |
| William Howard Doane Library | Building | 334 | Licking | 40 04 15 N | 082 31 33 W |
| William Howard Taft National Historic Site | Park | 257 | Hamilton | 39 07 10 N | 084 30 30 W |
| William Oxley Thompson Memorial Library | Building | 230 | Franklin | 39 59 57 N | 083 00 53 W |
| William Patrick McPherson Memorial Stadium | Park | 306 | Greene | 39 43 01 N | 083 52 27 W |
| William R Burton Vocational School | School | 246 | Lorain | 41 15 45 N | 082 12 50 W |
| William R Day Elementary School | School | 317 | Stark | 40 50 20 N | 081 24 31 W |
| William R Stone Elementary School | School | 197 | Washington | 39 16 54 N | 081 36 08 W |
| William Rainey Harper Elementary School | School | 236 | Cuyahoga | 41 25 39 N | 081 43 30 W |
| William S Anderson Information Science Center | Building | 248 | Montgomery | 39 44 27 N | 084 10 33 W |
| William S Guy Middle School | School | 329 | Trumbull | 41 09 26 N | 080 39 24 W |
| William S Stinson Elementary School | School | 307 | Stark | 40 54 28 N | 081 36 50 W |
| William Street United Methodist Church | Church | 267 | Delaware | 40 17 57 N | 083 04 10 W |
| William V Fisher Catholic High School | School | 278 | Fairfield | 39 44 42 N | 082 35 15 W |
| Williams Avenue Elementary School | School | 203 | Hamilton | 39 09 09 N | 084 27 34 W |
| Williams Burg Lake - East Dam | Dam | 196 | Wood | 41 26 42 N | 083 46 48 W |
| Williams Cemetery | Cemetery | 260 | Allen | 40 49 57 N | 084 00 32 W |
| Williams Cemetery | Cemetery | 300 | Ashtabula | 41 43 30 N | 080 39 19 W |
| Williams Cemetery | Cemetery | 253 | Lawrence | 38 31 31 N | 082 32 10 W |
| Williams Cemetery | Cemetery | 243 | Muskingum | 39 57 32 N | 082 04 24 W |
| Williams Cemetery | Cemetery | 372 | Richland | 40 42 44 N | 082 24 59 W |
| Williams Cemetery | Cemetery | 170 | Scioto | 38 50 53 N | 083 06 41 W |
| Williams Cemetery | Cemetery | 231 | Vinton | 39 02 56 N | 082 19 45 W |
| Williams Center | Populated Place | 241 | Williams | 41 25 44 N | 084 36 37 W |
| Williams Center Cemetery | Cemetery | 239 | Williams | 41 25 44 N | 084 36 45 W |
| Williams Chapel Cemetery | Cemetery | 346 | Madison | 39 50 59 N | 083 33 37 W |
| Williams Corners | Populated Place | 264 | Clermont | 39 10 21 N | 084 09 39 W |
| Williams County | Civil | 263 | Williams | 41 33 00 N | 084 35 00 W |
| Williams County Airport | Airport | 222 | Williams | 41 28 02 N | 084 30 23 W |
| Williams County Courthouse | Building | 233 | Williams | 41 28 27 N | 084 33 07 W |
| Williams County Home | Building | 250 | Williams | 41 33 12 N | 084 30 58 W |
| Williams County Jail | Building | 234 | Williams | 41 28 33 N | 084 33 13 W |
| Williams Creek | Stream | | Belmont | 40 00 17 N | 080 53 15 W |