Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Hazeldell School (historical) | School | 288 | Wayne | 40 40 39 N | 081 59 18 W |
| Hazelton | Populated Place | 292 | Carroll | 40 29 43 N | 081 13 49 W |
| Hazelton Corners | Locale | 310 | Licking | 40 06 49 N | 082 39 42 W |
| Hazelwood | Populated Place | 258 | Hamilton | 39 15 58 N | 084 21 47 W |
| Hazelwood Civic Center | Building | 252 | Hamilton | 39 15 58 N | 084 21 56 W |
| Hazelwood Elementary School | School | 253 | Franklin | 40 03 43 N | 082 22 11 W |
| Hazelwood Hill Club | Locale | 287 | Belmont | 40 09 23 N | 081 10 24 W |
| Hazelwood School | School | 305 | Summit | 41 02 04 N | 081 35 08 W |
| Hazlett Cemetery | Cemetery | 263 | Gallia | 38 41 00 N | 082 13 29 W |
| Hazlewood Post Office (historical) | Post Office | 257 | Hamilton | 39 16 00 N | 084 21 45 W |
| Hazzard Cemetery | Cemetery | 331 | Wayne | 40 58 01 N | 082 07 27 W |
| Head Cemetery | Cemetery | 279 | Highland | 39 10 27 N | 083 23 29 W |
| Headlands Baptist Church | Church | 184 | Lake | 41 44 02 N | 081 19 11 W |
| Headlands Beach State Park | Park | 176 | Lake | 41 45 30 N | 081 17 14 W |
| Headlands Dunes State Nature Preserve | Park | 175 | Lake | 41 45 35 N | 081 17 14 W |
| Headlands Elementary School | School | 183 | Lake | 41 44 02 N | 081 19 18 W |
| Headleg Hollow | Valley | | Vinton | 39 15 12 N | 082 37 48 W |
| Headley Cemetery | Cemetery | 309 | Franklin | 40 02 35 N | 082 48 25 W |
| Headley Ridge | Ridge | 389 | Monroe | 39 48 50 N | 080 58 06 W |
| Headley School (historical) | School | 225 | Vinton | 39 14 29 N | 082 38 18 W |
| Heads Branch | Stream | | Highland | 39 11 29 N | 083 23 56 W |
| Heads Hill | Summit | 372 | Highland | 39 10 45 N | 083 23 14 W |
| Heafey Ditch | Canal | 286 | Madison | 40 04 33 N | 083 16 18 W |
| Healey Creek | Stream | | Cuyahoga | 41 17 02 N | 081 44 46 W |
| Healey School (historical) | School | 274 | Tuscarawas | 40 24 43 N | 081 19 03 W |
| Health Hill Hospital for Children | Hospital | 263 | Cuyahoga | 41 28 58 N | 081 36 26 W |
| Hearn Cemetery | Cemetery | 330 | Washington | 39 26 56 N | 081 15 00 W |
| Hearst Cemetery | Cemetery | 318 | Champaign | 40 15 52 N | 083 54 16 W |
| Hearst School (historical) | School | 310 | Licking | 39 58 32 N | 082 15 60 W |
| Heart of Ohio Fish and Game Association Reservoir | Reservoir | 305 | Union | 40 14 48 N | 083 23 48 W |
| Hearthstone (subdivision) | Populated Place | 270 | Montgomery | 39 44 32 N | 084 07 60 W |
| Heath | Populated Place | 220 | Belmont | 39 57 22 N | 080 47 01 W |
| Heath | Populated Place | 262 | Licking | 40 01 22 N | 082 26 41 W |
| Heath Christian Union Church | Church | 263 | Licking | 40 01 28 N | 082 26 58 W |
| Heath Community Park | Park | 267 | Licking | 40 02 13 N | 082 27 21 W |
| Heath Ditch | Canal | 196 | Lucas | 41 30 48 N | 083 46 25 W |
| Heath Ditch | Canal | 201 | Lucas | 41 42 15 N | 083 42 38 W |
| Heath High School | School | 259 | Licking | 40 01 35 N | 082 25 59 W |
| Heath Pond | Lake | 299 | Lake | 41 36 22 N | 081 18 12 W |
| Heath Post Office (historical) | Post Office | 260 | Belmont | 39 57 29 N | 080 46 59 W |
| Heath United Methodist Church | Church | 174 | Meigs | 38 59 59 N | 082 03 04 W |
| Heath-Colton Cemetery | Cemetery | 206 | Henry | 41 28 24 N | 083 56 32 W |
| Heathcliff Office Park | Locale | 257 | Montgomery | 39 51 08 N | 084 16 11 W |
| Heathcliff Wellfield Park | Park | 234 | Montgomery | 39 51 30 N | 084 16 10 W |
| Heather Downs Country Club | Locale | 190 | Lucas | 41 35 52 N | 083 38 13 W |
| Heather Downs Elementary School | School | 190 | Lucas | 41 36 15 N | 083 37 14 W |
| Heather Hills Park | Park | 336 | Summit | 41 10 45 N | 081 26 59 W |
| Heatherdowns Church of the Brethren | Church | 191 | Lucas | 41 36 34 N | 083 37 36 W |
| Heatherdowns Plaza Shopping Center | Locale | 191 | Lucas | 41 35 37 N | 083 39 59 W |
| Heatherdowns Shopping Center | Locale | 190 | Lucas | 41 36 08 N | 083 37 31 W |
| Heatherdowns Village Shopping Center | Locale | 190 | Lucas | 41 36 06 N | 083 37 33 W |
| Heatherview Plaza Shopping Center | Locale | 192 | Lucas | 41 35 39 N | 083 40 54 W |
| Heavenly Place Church of God in Christ | Church | 296 | Mahoning | 41 06 59 N | 080 37 15 W |
| Hebardville | Populated Place | 227 | Athens | 39 15 12 N | 082 10 05 W |
| Hebbardsville Post Office (historical) | Post Office | 224 | Athens | 39 15 10 N | 082 10 05 W |
| Hebble Creek | Stream | | Greene | 39 47 54 N | 084 05 21 W |
| Heberle Elementary School | School | 161 | Hamilton | 39 07 08 N | 084 31 53 W |
| Hebrew Academy | School | 291 | Cuyahoga | 41 30 33 N | 081 33 23 W |
| Hebrew Academy of Toledo | School | 202 | Lucas | 41 41 19 N | 083 41 52 W |
| Hebrew Baptist Church | Church | 238 | Franklin | 39 57 03 N | 082 57 43 W |
| Hebrew Cemetery | Cemetery | 336 | Stark | 40 46 20 N | 081 22 17 W |
| Hebrew Institute | School | 262 | Montgomery | 39 46 36 N | 084 13 08 W |
| Hebrew School | School | 232 | Franklin | 39 56 45 N | 082 56 14 W |
| Hebrew Union College | School | 240 | Hamilton | 39 08 17 N | 084 31 16 W |
| Hebron | Populated Place | 271 | Licking | 39 57 42 N | 082 29 29 W |
| Hebron Baptist Church | Church | 271 | Licking | 39 57 45 N | 082 29 23 W |
| Hebron Cemetery | Cemetery | 273 | Licking | 39 57 44 N | 082 28 39 W |
| Hebron Christian Church | Church | 271 | Licking | 39 57 41 N | 082 29 43 W |
| Hebron Church | Church | 256 | Pickaway | 39 37 33 N | 083 11 28 W |
| Hebron Church (historical) | Church | 266 | Wyandot | 40 53 24 N | 083 29 10 W |
| Hebron Church Cemetery | Cemetery | 256 | Pickaway | 39 37 32 N | 083 11 29 W |
| Hebron Elementary School | School | 274 | Licking | 39 57 32 N | 082 29 48 W |
| Hebron Post Office | Post Office | 270 | Licking | 39 57 40 N | 082 29 30 W |
| Hebron School (historical) | School | 294 | Perry | 39 42 22 N | 082 05 38 W |
| Hebron State Fish Hatchery | Locale | 268 | Licking | 39 56 15 N | 082 30 50 W |
| Hebron United Methodist Church | Church | 271 | Licking | 39 57 41 N | 082 29 12 W |
| Hechts Landing | Populated Place | 265 | Mercer | 40 30 03 N | 084 28 02 W |
| Heck Bridge | Bridge | 228 | Seneca | 41 00 32 N | 083 11 41 W |
| Heck Hill | Summit | 365 | Champaign | 40 08 44 N | 083 55 24 W |
| Heckathorn School (historical) | School | 271 | Wyandot | 40 42 28 N | 083 26 24 W |
| Hecks Grove Park | Park | 256 | Tuscarawas | 40 21 56 N | 081 25 50 W |
| Hecla | Populated Place | 184 | Lawrence | 38 32 57 N | 082 38 20 W |
| Hecla Branch Storms Creek | Stream | | Lawrence | 38 33 12 N | 082 39 30 W |
| Hecla Cemetery | Cemetery | 215 | Lawrence | 38 32 58 N | 082 38 35 W |
| Hecla Post Office (historical) | Post Office | 187 | Lawrence | 38 32 55 N | 082 38 20 W |
| Hecla School | School | 189 | Lawrence | 38 32 53 N | 082 37 27 W |
| Hector | Populated Place | 219 | Putnam | 41 06 01 N | 084 13 40 W |
| Hector Post Office (historical) | Post Office | 219 | Putnam | 41 06 00 N | 084 13 40 W |
| Hedden Ditch | Canal | 283 | Seneca | 41 05 17 N | 082 57 20 W |
| Hedding Church | Church | 390 | Morrow | 40 24 15 N | 082 39 08 W |
| Hedge Apple Trail | Trail | 293 | Preble | 39 34 40 N | 084 45 58 W |
| Hedge Farm (historical) | Locale | 291 | Knox | 40 26 20 N | 082 18 15 W |
| Hedge School (historical) | School | 228 | Muskingum | 39 46 27 N | 081 47 16 W |
| Hedgehog Creek | Stream | | Morgan | 39 38 13 N | 081 56 16 W |
| Hedgerow Picnic Area | Locale | 272 | Preble | 39 35 27 N | 084 46 07 W |
| Hedges | Populated Place | 220 | Paulding | 41 05 31 N | 084 30 54 W |
| Hedges Cemetery | Cemetery | 164 | Hamilton | 39 17 38 N | 084 39 22 W |
| Hedges Cemetery | Cemetery | 218 | Paulding | 41 05 33 N | 084 31 10 W |
| Hedges Chapel | Church | 223 | Pickaway | 39 42 16 N | 082 53 32 W |
| Hedges Elementary School | School | 384 | Richland | 40 45 12 N | 082 30 37 W |
| Hedges Family Cemetery | Cemetery | 234 | Hancock | 41 03 30 N | 083 40 48 W |
| Hedges Island | Island | 190 | Wood | 41 26 49 N | 083 46 56 W |
| Hedges Park | Park | 229 | Seneca | 41 06 47 N | 083 10 21 W |
| Hedges Post Office (historical) | Post Office | 218 | Paulding | 41 05 30 N | 084 30 55 W |
| Hedges School (historical) | School | 345 | Champaign | 40 02 33 N | 083 44 20 W |
| Hedges School (historical) | School | 270 | Marion | 40 41 16 N | 083 17 08 W |
| Hedges School Park | Park | 391 | Richland | 40 45 07 N | 082 30 39 W |
| Hedges-Boyer Park | Park | 235 | Seneca | 41 06 19 N | 083 09 29 W |
| Hedgewood (subdivision) | Populated Place | 178 | Gallia | 38 48 50 N | 082 12 34 W |
| Hedington Corners | Populated Place | 366 | Knox | 40 17 35 N | 082 42 47 W |