Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Landneck Post Office (historical) | Post Office | 243 | Allen | 40 48 00 N | 084 23 20 W |
| Landon School | School | 208 | Cuyahoga | 41 28 40 N | 081 44 56 W |
| Landrum Cemetery | Cemetery | 273 | Jackson | 39 05 47 N | 082 42 08 W |
| Lane | Populated Place | 209 | Lake | 41 45 03 N | 081 10 52 W |
| Lane Avenue Shopping Center | Locale | 256 | Franklin | 40 00 23 N | 083 03 14 W |
| Lane Post Office (historical) | Post Office | 210 | Lake | 41 45 05 N | 081 10 54 W |
| Lane Public Library | Building | 180 | Butler | 39 24 10 N | 084 33 30 W |
| Lane Road Cemetery | Cemetery | 193 | Lake | 41 43 32 N | 081 10 52 W |
| Lane Road Park | Park | 268 | Franklin | 40 02 34 N | 083 04 22 W |
| Lane School | School | 305 | Montgomery | 39 42 15 N | 084 10 24 W |
| Lane School | School | 295 | Summit | 41 04 03 N | 081 32 40 W |
| Lane Seminary (historical) | School | 254 | Hamilton | 39 07 40 N | 084 29 20 W |
| Lanes Branch | Stream | | Gallia | 38 37 59 N | 082 17 23 W |
| Lanes Mill | Locale | 224 | Butler | 39 28 49 N | 084 41 10 W |
| Lanes Valley | Valley | | Tuscarawas | 40 24 31 N | 081 24 58 W |
| Lang Creek | Stream | | Ashland | 40 52 39 N | 082 16 29 W |
| Lang Hall | Building | 242 | Cuyahoga | 41 22 24 N | 081 51 00 W |
| Lang Yard | Locale | 179 | Lucas | 41 42 09 N | 083 30 14 W |
| Langdon Cemetery | Cemetery | 174 | Lawrence | 38 30 12 N | 082 28 49 W |
| Lange Elementary School (historical) | School | 279 | Montgomery | 39 44 39 N | 084 08 60 W |
| Langenderfer Ditch | Canal | 209 | Lucas | 41 40 09 N | 083 50 13 W |
| Langes Run | Stream | | Summit | 41 13 03 N | 081 33 35 W |
| Langley School (historical) | School | 270 | Licking | 40 09 08 N | 082 17 45 W |
| Langmoor Golf Course | Locale | 343 | Summit | 40 57 45 N | 081 26 42 W |
| Langston Middle School | School | 248 | Lorain | 41 17 45 N | 082 12 60 W |
| Langston Park | Park | 267 | Franklin | 40 02 44 N | 083 03 38 W |
| Langstroth House | Building | 267 | Butler | 39 30 24 N | 084 43 49 W |
| Langsville | Populated Place | 177 | Meigs | 39 02 49 N | 082 10 54 W |
| Langsville Post Office | Post Office | 181 | Meigs | 39 02 50 N | 082 10 55 W |
| Lanier Elementary School (historical) | School | 296 | Preble | 39 42 01 N | 084 32 21 W |
| Lankamer Lake | Reservoir | 251 | Vinton | 39 13 12 N | 082 31 18 W |
| Lankamer Lake Dam | Dam | 251 | Vinton | 39 13 12 N | 082 31 18 W |
| Lanker Airport | Airport | 436 | Morrow | 40 35 02 N | 082 40 46 W |
| Lanning School (historical) | School | 366 | Tuscarawas | 40 15 52 N | 081 22 58 W |
| Lanreco Park | Park | 249 | Fairfield | 39 43 08 N | 082 34 51 W |
| Lansdowne Airport | Airport | 312 | Mahoning | 41 07 45 N | 080 37 14 W |
| Lansdowne Landing Strip | Airport | 315 | Darke | 40 05 21 N | 084 35 52 W |
| Lansing | Populated Place | 213 | Belmont | 40 04 32 N | 080 47 24 W |
| Lansing Cemetery | Cemetery | 212 | Belmont | 40 04 31 N | 080 47 31 W |
| Lansing Post Office | Post Office | 210 | Belmont | 40 04 30 N | 080 47 24 W |
| Lansing Primary School | School | 213 | Belmont | 40 04 32 N | 080 47 23 W |
| Lanterman Mill | Locale | 299 | Mahoning | 41 04 01 N | 080 40 55 W |
| Lantz Cemetery | Cemetery | 378 | Richland | 40 45 06 N | 082 28 16 W |
| Lantz School (historical) | School | 265 | Greene | 39 44 13 N | 084 01 23 W |
| Laporte | Populated Place | 231 | Lorain | 41 19 50 N | 082 04 40 W |
| Lapp Ditch | Canal | 216 | Putnam | 41 01 21 N | 084 18 03 W |
| Lapperell | Populated Place | 225 | Pike | 39 07 49 N | 083 16 41 W |
| Lapperell Cemetery | Cemetery | 214 | Pike | 39 07 46 N | 083 16 57 W |
| Lapperell Hollow | Valley | | Pike | 39 07 54 N | 083 17 17 W |
| Lapperell Post Office (historical) | Post Office | 229 | Pike | 39 07 50 N | 083 16 40 W |
| Lapperell United Brethren Church | Church | 213 | Pike | 39 07 45 N | 083 16 57 W |
| Larc Camp | Locale | 205 | Lucas | 41 31 37 N | 083 50 44 W |
| Larc Lane School | School | 190 | Lucas | 41 37 00 N | 083 35 40 W |
| Larch Tree Golf Course | Locale | 288 | Montgomery | 39 47 08 N | 084 20 07 W |
| Larchmont Elementary School | School | 183 | Lucas | 41 42 14 N | 083 34 46 W |
| Larey School (historical) | School | 262 | Pickaway | 39 38 59 N | 083 14 15 W |
| Larimer Athletic Complex | Building | 180 | Lucas | 41 39 28 N | 083 36 49 W |
| Lark Elementary School | School | 187 | Wood | 41 36 56 N | 083 32 08 W |
| Larkin Cemetery | Cemetery | 161 | Scioto | 38 44 31 N | 083 02 02 W |
| Larkin Park | Park | 261 | Auglaize | 40 31 57 N | 084 22 60 W |
| Larkins Hall | Building | 227 | Franklin | 40 00 01 N | 083 00 59 W |
| Larkmoor Elementary School | School | 186 | Lorain | 41 28 21 N | 082 08 34 W |
| Larmen Cemetery | Cemetery | 252 | Brown | 38 49 18 N | 083 55 58 W |
| Larry Peairs Memorial Lake | Reservoir | 345 | Geauga | 41 26 36 N | 081 03 17 W |
| Larry Peairs Memorial Lake Dam | Dam | 345 | Geauga | 41 26 36 N | 081 03 17 W |
| LaRue Cemetery | Cemetery | 295 | Marion | 40 35 57 N | 083 22 43 W |
| Larzelere School (historical) | School | 301 | Perry | 39 48 04 N | 082 07 02 W |
| LaSalle High School | School | 276 | Hamilton | 39 11 20 N | 084 35 10 W |
| Lasalle School (historical) | School | 229 | Fulton | 41 38 28 N | 084 03 17 W |
| Lash Cemetery | Cemetery | 277 | Williams | 41 35 13 N | 084 33 35 W |
| Lash School (historical) | School | 277 | Williams | 41 33 23 N | 084 47 19 W |
| Lasher Hall | Building | 211 | Athens | 39 19 38 N | 082 06 12 W |
| Lashley | Populated Place | 267 | Noble | 39 55 07 N | 081 24 01 W |
| Laskey Shopping Center | Locale | 193 | Lucas | 41 42 24 N | 083 37 28 W |
| Latcha | Populated Place | 189 | Wood | 41 32 39 N | 083 27 13 W |
| Latham | Populated Place | 192 | Pike | 39 05 56 N | 083 14 48 W |
| Latham Bay | Bay | 302 | Summit | 40 58 05 N | 081 33 07 W |
| Latham Lane Picnic Area | Locale | 305 | Summit | 40 58 00 N | 081 32 54 W |
| Latham Post Office | Post Office | 191 | Pike | 39 05 55 N | 083 14 50 W |
| Lathley Hollow | Valley | | Meigs | 38 58 21 N | 081 47 27 W |
| Lathrop | Populated Place | 194 | Morgan | 39 25 22 N | 081 54 55 W |
| Lathrop Cemetery | Cemetery | 178 | Sandusky | 41 23 34 N | 083 00 40 W |
| Lathrop Elementary School | School | 207 | Lake | 41 42 37 N | 081 15 55 W |
| Lathrop Elementary School | School | 314 | Stark | 40 47 11 N | 081 22 36 W |
| Latimer | Populated Place | 311 | Trumbull | 41 21 24 N | 080 37 04 W |
| Latimer Cemetery | Cemetery | 272 | Trumbull | 41 29 24 N | 080 52 22 W |
| Latimer Post Office (historical) | Post Office | 310 | Trumbull | 41 21 25 N | 080 37 04 W |
| Latrobe (historical) | Populated Place | 248 | Jackson | 39 04 12 N | 082 30 51 W |
| Latrobe School (historical) | School | 257 | Jackson | 39 04 21 N | 082 31 22 W |
| Latta Run | Stream | | Ross | 39 21 39 N | 083 12 43 W |
| Lattasburg | Populated Place | 353 | Wayne | 40 52 43 N | 082 06 31 W |
| Lattaville | Populated Place | 271 | Ross | 39 20 53 N | 083 12 23 W |
| Latto School (historical) | School | 297 | Tuscarawas | 40 21 09 N | 081 17 01 W |
| Latty | Populated Place | 222 | Paulding | 41 05 19 N | 084 35 07 W |
| Latty Center School (historical) | School | 221 | Paulding | 41 02 00 N | 084 30 53 W |
| Latty Grove Park | Park | 213 | Defiance | 41 16 45 N | 084 22 01 W |
| Latty Post Office | Post Office | 222 | Paulding | 41 05 15 N | 084 34 53 W |
| Latty Town Park | Park | 222 | Paulding | 41 05 13 N | 084 34 57 W |
| Latty Township Hall | Building | 220 | Paulding | 41 01 08 N | 084 28 27 W |
| Lauber Hill Cemetery | Cemetery | 226 | Fulton | 41 34 28 N | 084 16 06 W |
| Lauber Hill Reformed Mennonite Church | Church | 227 | Fulton | 41 34 26 N | 084 16 07 W |
| Laucks Chapel (historical) | Church | 182 | Meigs | 39 01 15 N | 081 46 10 W |
| Laucks Chapel Cemetery | Cemetery | 178 | Meigs | 39 01 15 N | 081 46 07 W |
| Laucks Run | Stream | | Meigs | 39 01 45 N | 081 46 40 W |
| Laughlin Hollow | Valley | | Pike | 39 06 32 N | 083 20 49 W |
| Lauman Cemetery | Cemetery | 174 | Scioto | 38 55 22 N | 083 02 34 W |
| Lauman School (historical) | School | 317 | Greene | 39 40 27 N | 083 53 25 W |
| Laura | Populated Place | 302 | Miami | 39 59 41 N | 084 24 29 W |
| Laura Farrell Elementary School | School | 207 | Warren | 39 33 53 N | 084 18 36 W |
| Laura Memorial College (historical) | School | 166 | Hamilton | 39 06 05 N | 084 31 17 W |