Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Dunn Cemetery | Cemetery | 243 | Wyandot | 40 58 36 N | 083 16 27 W |
| Dunn Chapel | Church | 338 | Highland | 39 14 20 N | 083 41 14 W |
| Dunn Eden Lake | Lake | 334 | Mahoning | 40 59 00 N | 080 51 37 W |
| Dunn Field | Airport | 291 | Portage | 41 09 21 N | 081 00 14 W |
| Dunn School (historical) | School | 287 | Brown | 39 00 24 N | 083 52 59 W |
| Dunn School (historical) | School | 353 | Clark | 39 52 23 N | 083 35 05 W |
| Dunn School (historical) | School | 328 | Hardin | 40 36 13 N | 083 43 02 W |
| Dunn School (historical) | School | 308 | Madison | 39 59 35 N | 083 25 16 W |
| Dunns Chapel Cemetery | Cemetery | 336 | Highland | 39 14 19 N | 083 41 10 W |
| Dunns Pond | Reservoir | 305 | Logan | 40 28 32 N | 083 51 54 W |
| Duns Scotus Library | Building | 200 | Lucas | 41 42 39 N | 083 42 26 W |
| Dupont | Populated Place | 221 | Putnam | 41 03 23 N | 084 18 16 W |
| Dupont Post Office | Post Office | 221 | Putnam | 41 03 25 N | 084 18 15 W |
| Dupre School (historical) | School | 219 | Paulding | 41 10 44 N | 084 35 35 W |
| Durant | Populated Place | 206 | Morgan | 39 45 01 N | 081 54 38 W |
| Durant Post Office (historical) | Post Office | 206 | Morgan | 39 45 01 N | 081 54 39 W |
| Durbin | Populated Place | 268 | Clark | 39 54 42 N | 083 53 28 W |
| Durbin | Populated Place | 265 | Mercer | 40 33 36 N | 084 42 30 W |
| Durbin Post Office (historical) | Post Office | 264 | Mercer | 40 33 35 N | 084 42 30 W |
| Durbin Run | Stream | | Fairfield | 39 38 07 N | 082 28 31 W |
| Durgan | Populated Place | 207 | Gallia | 39 00 29 N | 082 22 01 W |
| Durgan Post Office (historical) | Post Office | 206 | Gallia | 39 00 30 N | 082 21 60 W |
| Durham Estates (subdivision) | Populated Place | 249 | Williams | 41 28 18 N | 084 36 55 W |
| Durham Hill School (historical) | School | 237 | Clermont | 38 59 31 N | 084 15 04 W |
| Durkee Cemetery | Cemetery | 239 | Ashtabula | 41 53 33 N | 080 34 21 W |
| Durling Elementary School | School | 217 | Lorain | 41 25 35 N | 082 10 01 W |
| Durling Park | Park | 370 | Medina | 41 01 45 N | 081 43 28 W |
| Durst Ridge | Ridge | 238 | Meigs | 39 00 32 N | 081 48 35 W |
| Dush Pond | Reservoir | 257 | Wayne | 40 44 18 N | 081 58 30 W |
| Dush Pond Dam | Dam | 257 | Wayne | 40 44 18 N | 081 58 30 W |
| Dustman School (historical) | School | 244 | Van Wert | 40 49 48 N | 084 35 16 W |
| Duston Cemetery | Cemetery | 225 | Gallia | 38 55 51 N | 082 17 14 W |
| Dutch Alley | Populated Place | 209 | Cuyahoga | 41 29 17 N | 081 38 10 W |
| Dutch Cemetery | Cemetery | 291 | Montgomery | 39 38 05 N | 084 28 35 W |
| Dutch Church Cemetery | Cemetery | 323 | Stark | 40 55 50 N | 081 06 19 W |
| Dutch Corners | Populated Place | 391 | Carroll | 40 30 40 N | 081 02 15 W |
| Dutch Creek | Stream | | Athens | 39 22 18 N | 081 59 13 W |
| Dutch Creek | Stream | | Clinton | 39 27 39 N | 083 55 02 W |
| Dutch Cross School (historical) | School | 341 | Licking | 40 14 24 N | 082 38 27 W |
| Dutch Fork | Stream | | Licking | 40 00 41 N | 082 26 34 W |
| Dutch Gap | Gap | 175 | Sandusky | 41 27 09 N | 083 01 32 W |
| Dutch Hill Cemetery | Cemetery | 291 | Morgan | 39 44 08 N | 081 56 20 W |
| Dutch Hill Cemetery | Cemetery | 399 | Richland | 40 35 00 N | 082 23 23 W |
| Dutch Hill School (historical) | School | 297 | Morgan | 39 44 21 N | 081 56 51 W |
| Dutch Hollow | Valley | | Fairfield | 39 39 05 N | 082 46 30 W |
| Dutch Hollow | Valley | | Jackson | 38 52 22 N | 082 43 22 W |
| Dutch Hollow | Valley | | Pike | 39 03 02 N | 082 48 52 W |
| Dutch Hollow Cemeteries | Cemetery | 291 | Fairfield | 39 38 52 N | 082 47 23 W |
| Dutch Hollow Cemetery | Cemetery | 241 | Allen | 40 49 02 N | 084 11 07 W |
| Dutch Hollow School (historical) | School | 257 | Tuscarawas | 40 19 13 N | 081 28 53 W |
| Dutch Ridge | Populated Place | 229 | Fulton | 41 38 33 N | 083 57 18 W |
| Dutch Ridge | Ridge | 281 | Athens | 39 12 17 N | 081 56 32 W |
| Dutch Ridge | Ridge | 259 | Scioto | 38 47 05 N | 082 52 13 W |
| Dutch Ridge Cemetery | Cemetery | 229 | Fulton | 41 38 46 N | 083 57 21 W |
| Dutch Ridge Cemetery | Cemetery | 336 | Mahoning | 40 59 00 N | 080 48 54 W |
| Dutch Run | Stream | | Coshocton | 40 21 54 N | 082 05 41 W |
| Dutch Run | Stream | | Pike | 39 00 25 N | 082 54 60 W |
| Dutch Run | Stream | | Putnam | 41 00 43 N | 083 57 19 W |
| Dutch Run Cemetery | Cemetery | 344 | Coshocton | 40 24 08 N | 082 06 26 W |
| Dutch Run Church | Church | 279 | Coshocton | 40 23 27 N | 082 06 36 W |
| Dutch Run School (historical) | School | 273 | Coshocton | 40 23 30 N | 082 06 46 W |
| Dutch School (historical) | School | 317 | Clinton | 39 29 15 N | 083 46 11 W |
| Dutch School (historical) | School | 309 | Muskingum | 40 07 05 N | 082 04 34 W |
| Dutch Valley | Valley | | Tuscarawas | 40 21 07 N | 081 21 22 W |
| Dutch Valley Cemetery | Cemetery | 276 | Tuscarawas | 40 21 11 N | 081 21 38 W |
| Dutch Valley School (historical) | School | 283 | Tuscarawas | 40 21 27 N | 081 22 11 W |
| Dutchtown | Populated Place | 192 | Meigs | 39 01 23 N | 081 59 20 W |
| Dutchtown | Populated Place | 311 | Tuscarawas | 40 37 00 N | 081 22 04 W |
| Dutton Cemetery | Cemetery | 397 | Columbiana | 40 46 20 N | 080 57 21 W |
| Duttons Landing | Locale | 182 | Athens | 39 11 20 N | 081 44 42 W |
| Duvall | Populated Place | 243 | Noble | 39 45 31 N | 081 29 06 W |
| Duvall | Populated Place | 218 | Pickaway | 39 46 19 N | 082 57 28 W |
| Duvall Cemetery | Cemetery | 308 | Darke | 40 13 09 N | 084 40 42 W |
| Duvall Post Office (historical) | Post Office | 218 | Pickaway | 39 46 20 N | 082 57 30 W |
| Duvall School | School | 249 | Hamilton | 39 13 51 N | 084 32 20 W |
| Duxberry Park School | School | 255 | Franklin | 40 00 30 N | 082 57 41 W |
| Dwight | Populated Place | 380 | Monroe | 39 48 40 N | 080 55 51 W |
| Dwight Post Office (historical) | Post Office | 389 | Monroe | 39 48 40 N | 080 55 49 W |
| Dwyer | Populated Place | 225 | Montgomery | 39 40 45 N | 084 12 44 W |
| Dwyer Cemetery | Cemetery | 302 | Ross | 39 16 00 N | 083 21 55 W |
| Dwyer School (historical) | School | 305 | Ross | 39 15 56 N | 083 21 53 W |
| Dwyer-Mercer County Library | Building | 267 | Mercer | 40 33 04 N | 084 34 16 W |
| Dye Cemetery | Cemetery | 261 | Brown | 38 51 31 N | 083 51 06 W |
| Dye Cemetery | Cemetery | 191 | Washington | 39 27 09 N | 081 20 00 W |
| Dye Ridge | Ridge | 291 | Monroe | 39 36 18 N | 081 09 12 W |
| Dyer Hall | Building | 245 | Hamilton | 39 07 48 N | 084 31 07 W |
| Dyer Park | Park | 162 | Hamilton | 39 07 13 N | 084 31 46 W |
| Dyer School | School | 156 | Hamilton | 39 06 23 N | 084 31 44 W |
| Dyes Cemetery | Cemetery | 336 | Tuscarawas | 40 19 27 N | 081 33 09 W |
| Dyes Fork | Stream | | Morgan | 39 37 46 N | 081 43 09 W |
| Dyes Landing | Locale | 173 | Meigs | 38 56 51 N | 081 49 25 W |
| Dyes Landing | Locale | 180 | Washington | 39 21 55 N | 081 31 03 W |
| Dyes School (historical) | School | 352 | Holmes | 40 38 57 N | 082 00 55 W |
| Dyesville | Populated Place | 189 | Meigs | 39 07 41 N | 082 13 48 W |
| Dyesville Community Church | Church | 188 | Meigs | 39 07 41 N | 082 13 49 W |
| Dyesville Post Office (historical) | Post Office | 186 | Meigs | 39 07 40 N | 082 13 50 W |
| Dyke Cemetery | Cemetery | 257 | Gallia | 38 57 43 N | 082 18 12 W |
| Dysinger Cemetery | Cemetery | 224 | Seneca | 41 13 35 N | 083 23 11 W |
| E A Powell Elementary School | School | 223 | Wood | 41 11 02 N | 083 40 50 W |
| E E Davis Career Center | Building | 192 | Gallia | 38 52 50 N | 082 22 40 W |
| E J Blott Elementary School | School | 327 | Trumbull | 41 09 19 N | 080 39 24 W |
| E J Brown Elementary School | School | 250 | Montgomery | 39 47 08 N | 084 12 47 W |
| E J Thomas Performing Arts Center | Building | 310 | Summit | 41 04 42 N | 081 30 53 W |
| E J Thomas Performing Arts Hall | Building | 310 | Summit | 41 04 41 N | 081 30 55 W |
| E L Blankenship Riverside Sanctuary | Park | 266 | Miami | 40 05 45 N | 084 21 07 W |
| E T B C Apostolic Church | Church | 329 | Mahoning | 41 07 32 N | 080 35 16 W |
| E-DOT Field | Airport | 228 | Butler | 39 29 57 N | 084 40 04 W |
| Eachus School (historical) | School | 337 | Madison | 39 49 23 N | 083 31 44 W |
| Eagle Academy | School | | Cuyahoga | 41 26 57 N | 081 33 37 W |
| Eagle Center Church (historical) | Church | 251 | Hancock | 40 57 03 N | 083 42 26 W |