Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Horseshoe Island | Island | 174 | Ottawa | 41 27 35 N | 083 02 04 W |
| Horseshoe Run | Stream | | Delaware | 40 20 16 N | 083 03 21 W |
| Horsetail Run | Stream | | Ashland | 40 36 27 N | 082 15 55 W |
| Horton | Populated Place | 315 | Harrison | 40 09 43 N | 080 54 27 W |
| Horton | Populated Place | 326 | Logan | 40 27 11 N | 083 33 18 W |
| Horton Cemetery | Cemetery | 241 | Jackson | 38 55 30 N | 082 38 56 W |
| Horton Post Office (historical) | Post Office | 325 | Logan | 40 27 10 N | 083 33 20 W |
| Horwitz House | Building | 324 | Knox | 40 22 31 N | 082 23 45 W |
| Hosack Street Baptist Church | Church | 238 | Franklin | 39 54 19 N | 082 57 52 W |
| Hoschover Cemetery | Cemetery | 316 | Darke | 40 15 47 N | 084 37 60 W |
| Hosea Missionary Baptist Church | Church | 204 | Cuyahoga | 41 30 23 N | 081 38 01 W |
| Hoshor Cemetery | Cemetery | 243 | Fairfield | 39 49 07 N | 082 45 39 W |
| Hoskins Bridge | Bridge | 274 | Delaware | 40 25 10 N | 083 11 50 W |
| Hoskins Creek | Stream | | Ashtabula | 41 34 16 N | 080 54 47 W |
| Hoskinsville | Populated Place | 238 | Noble | 39 46 16 N | 081 35 31 W |
| Hoskinsville Post Office (historical) | Post Office | 237 | Noble | 39 46 15 N | 081 35 29 W |
| Hosmer Airfield | Airport | 372 | Geauga | 41 25 53 N | 081 06 53 W |
| Hossom School (historical) | School | 299 | Morgan | 39 34 55 N | 081 45 22 W |
| Hosterman Lake | Reservoir | 283 | Clark | 39 54 42 N | 083 54 18 W |
| Hosterman Lake Dam | Dam | 283 | Clark | 39 54 42 N | 083 54 18 W |
| Hostetler Cemetery | Cemetery | 320 | Tuscarawas | 40 29 59 N | 081 39 06 W |
| Hostetter School (historical) | School | 332 | Stark | 40 44 51 N | 081 06 17 W |
| Hot Waters Marina | Locale | 175 | Lorain | 41 28 15 N | 082 11 08 W |
| Hotchkiss Elementary School | School | 312 | Summit | 41 03 50 N | 081 28 20 W |
| Hothem Ridge | Ridge | 322 | Tuscarawas | 40 22 01 N | 081 39 37 W |
| Hothouse Ridge | Ridge | 282 | Hocking | 39 03 15 N | 082 28 43 W |
| Houchin School (historical) | School | 306 | Logan | 40 30 36 N | 083 56 05 W |
| Houck Cemetery | Cemetery | 249 | Gallia | 38 41 46 N | 082 20 51 W |
| Houck Cemetery | Cemetery | 360 | Knox | 40 17 35 N | 082 43 30 W |
| Houck Meadows | Populated Place | 290 | Clark | 39 50 42 N | 083 55 56 W |
| Houcktown | Populated Place | 253 | Hancock | 40 56 07 N | 083 35 39 W |
| Houcktown Post Office (historical) | Post Office | 253 | Hancock | 40 56 05 N | 083 35 40 W |
| Hough | Populated Place | 198 | Cuyahoga | 41 30 43 N | 081 38 11 W |
| Hough Avenue Church (historical) | Church | 198 | Cuyahoga | 41 30 29 N | 081 39 00 W |
| Hough Avenue United Church of Christ | Church | 198 | Cuyahoga | 41 30 32 N | 081 38 45 W |
| Hough Branch Cleveland Public Library | Building | 203 | Cuyahoga | 41 30 32 N | 081 37 38 W |
| Hough Cemetery | Cemetery | 225 | Wood | 41 11 25 N | 083 40 52 W |
| Hough School | School | 202 | Cuyahoga | 41 30 37 N | 081 37 27 W |
| Houghton Cemetery | Cemetery | 190 | Lucas | 41 40 40 N | 083 37 18 W |
| Houghts Landing | Locale | 185 | Monroe | 39 34 37 N | 080 59 20 W |
| Houk Stream Park | Park | 266 | Montgomery | 39 43 06 N | 084 10 56 W |
| Houp School (historical) | School | 317 | Highland | 39 11 37 N | 083 33 05 W |
| Hourglass Pond | Lake | 301 | Lake | 41 36 18 N | 081 18 21 W |
| House Cemetery | Cemetery | 266 | Noble | 39 54 51 N | 081 18 40 W |
| House of God | Church | 205 | Cuyahoga | 41 30 01 N | 081 38 17 W |
| House of God | Church | 165 | Hamilton | 39 06 38 N | 084 30 44 W |
| House of God | Church | 177 | Hamilton | 39 13 33 N | 084 27 41 W |
| House of God | Church | 161 | Scioto | 38 44 35 N | 082 59 33 W |
| House of God | Church | 288 | Summit | 41 04 48 N | 081 32 12 W |
| House of God Assemble of Yaheveh | Church | 237 | Hamilton | 39 08 07 N | 084 29 10 W |
| House of God Chapel | Church | 167 | Hamilton | 39 06 58 N | 084 30 60 W |
| House of God Holy Church | Church | 243 | Franklin | 39 57 55 N | 082 57 48 W |
| House of God Holy Church | Church | 225 | Montgomery | 39 44 18 N | 084 12 44 W |
| House of God of the Apostolic Faith | Church | 225 | Hamilton | 39 09 16 N | 084 28 56 W |
| House of Israel Cemetery | Cemetery | 280 | Trumbull | 41 12 11 N | 080 51 15 W |
| House of Jacob | Church | 330 | Mahoning | 41 07 46 N | 080 35 23 W |
| House of Jacob Cemetery | Cemetery | 251 | Montgomery | 39 48 46 N | 084 08 52 W |
| House of Jacob Church | Church | 231 | Clermont | 39 13 35 N | 084 16 38 W |
| House of Joy Baptist Church | Church | 309 | Summit | 41 02 22 N | 081 33 31 W |
| House of Prayer | Church | 193 | Cuyahoga | 41 32 00 N | 081 35 55 W |
| House of Prayer | Church | 209 | Cuyahoga | 41 27 40 N | 081 42 14 W |
| House of Prayer | Church | 241 | Franklin | 39 57 21 N | 082 57 50 W |
| House of Prayer | Church | 165 | Hamilton | 39 09 32 N | 084 33 13 W |
| House of Prayer | Church | 235 | Seneca | 41 08 48 N | 083 24 30 W |
| House of Prayer Church | Church | 286 | Marion | 40 35 54 N | 083 08 57 W |
| House of Prayer Church | Church | 314 | Shelby | 40 17 28 N | 084 10 28 W |
| House of Prayer for All People | Church | 306 | Summit | 41 05 26 N | 081 32 03 W |
| House of Prayer Holiness Church | Church | 294 | Fayette | 39 32 24 N | 083 25 25 W |
| House of Prayer Holiness Church | Church | 189 | Lucas | 41 38 37 N | 083 34 39 W |
| House of Prayer Pentecostal Church of God | Church | 297 | Hardin | 40 39 01 N | 083 36 49 W |
| House of the Lord | Church | 302 | Summit | 41 04 06 N | 081 34 12 W |
| House School (historical) | School | 363 | Holmes | 40 29 21 N | 082 09 28 W |
| Housemantown School (historical) | School | 250 | Ross | 39 13 40 N | 083 20 12 W |
| Houston | Populated Place | 292 | Shelby | 40 15 16 N | 084 20 13 W |
| Houston Cemetery | Cemetery | 292 | Shelby | 40 14 58 N | 084 20 28 W |
| Houston Congregational Christian Church | Church | 292 | Shelby | 40 14 56 N | 084 20 30 W |
| Houston Elementary School | School | 253 | Hamilton | 39 14 21 N | 084 35 05 W |
| Houston High School | School | 293 | Shelby | 40 14 44 N | 084 19 57 W |
| Houston Hollow | Valley | | Scioto | 38 50 22 N | 082 58 59 W |
| Houston Hollow Church | Church | 199 | Scioto | 38 50 30 N | 082 58 10 W |
| Houston Post Office | Post Office | 292 | Shelby | 40 15 15 N | 084 20 15 W |
| Houston Upground Reservoir | Reservoir | 302 | Clinton | 39 16 54 N | 083 55 06 W |
| Houston Upground Reservoir Dam | Dam | 302 | Clinton | 39 16 54 N | 083 55 06 W |
| Houts School (historical) | School | 376 | Richland | 40 47 04 N | 082 40 51 W |
| Houtz Ditch | Canal | 250 | Mercer | 40 37 29 N | 084 33 51 W |
| Hoverman Ditch | Canal | 245 | Van Wert | 40 48 21 N | 084 40 05 W |
| Howard | Populated Place | 275 | Knox | 40 24 27 N | 082 19 37 W |
| Howard Cemetery | Cemetery | 207 | Pike | 39 08 40 N | 082 58 14 W |
| Howard Cemetery | Cemetery | 202 | Pike | 38 59 35 N | 082 59 45 W |
| Howard Cemetery | Cemetery | 246 | Warren | 39 19 54 N | 084 05 19 W |
| Howard Cemetery | Cemetery | 201 | Wood | 41 24 46 N | 083 51 51 W |
| Howard Chapman Elementary School | School | 308 | Cuyahoga | 41 17 16 N | 081 47 29 W |
| Howard Creek | Stream | | Hamilton | 39 16 20 N | 084 44 09 W |
| Howard Dittrick Museum of Historical Medicine | Building | 208 | Cuyahoga | 41 30 21 N | 081 36 30 W |
| Howard Elementary School | School | 256 | Hamilton | 39 12 17 N | 084 23 55 W |
| Howard Farms Beach | Populated Place | 174 | Lucas | 41 39 14 N | 083 14 44 W |
| Howard Island | Island | 195 | Wood | 41 24 50 N | 083 52 24 W |
| Howard Number 2 Cemetery | Cemetery | 201 | Pike | 38 58 02 N | 083 03 09 W |
| Howard Post Office | Post Office | 274 | Knox | 40 24 25 N | 082 19 35 W |
| Howard Ridge | Ridge | 271 | Brown | 38 44 40 N | 083 48 30 W |
| Howard Ridge | Ridge | 261 | Scioto | 38 43 49 N | 082 42 02 W |
| Howard Ridge | Ridge | 215 | Wood | 41 12 00 N | 083 43 30 W |
| Howard Ridge Cemetery | Cemetery | 263 | Brown | 38 44 35 N | 083 48 52 W |
| Howard Run | Stream | | Clermont | 39 07 11 N | 084 00 39 W |
| Howard Run | Stream | | Hancock | 41 02 27 N | 083 39 50 W |
| Howard Run | Stream | | Scioto | 38 43 54 N | 082 43 57 W |
| Howard Run | Stream | | Union | 40 07 57 N | 083 29 27 W |
| Howard School | School | 238 | Hancock | 41 03 13 N | 083 39 21 W |
| Howard School (historical) | School | 306 | Union | 40 29 55 N | 083 26 18 W |
| Howard United Methodist Church | Church | 237 | Hancock | 41 02 44 N | 083 38 51 W |