Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Flat Run | Stream | | Marion | 40 37 33 N | 082 57 35 W |
| Flat Run | Stream | | Muskingum | 39 54 07 N | 081 59 58 W |
| Flat Run | Stream | | Vinton | 39 11 59 N | 082 22 13 W |
| Flat Run | Stream | | Vinton | 39 12 51 N | 082 17 24 W |
| Flat Run | Stream | | Williams | 41 32 02 N | 084 23 09 W |
| Flat Run Cemetery | Cemetery | 255 | Adams | 39 01 42 N | 083 30 40 W |
| Flat Run Church | Church | 264 | Adams | 39 01 28 N | 083 31 58 W |
| Flat Run School (historical) | School | 278 | Knox | 40 24 47 N | 082 12 55 W |
| Flat Run School (historical) | School | 208 | Vinton | 39 12 34 N | 082 21 25 W |
| Flatfork Run | Stream | | Gallia | 38 53 43 N | 082 11 15 W |
| Flatiron | Populated Place | 243 | Perry | 39 44 43 N | 082 05 52 W |
| Flatlick Run | Stream | | Vinton | 39 02 37 N | 082 21 15 W |
| Flatrock Creek | Stream | | Paulding | 41 10 39 N | 084 26 27 W |
| Flatwood Cemetery | Cemetery | 259 | Meigs | 39 08 47 N | 081 47 21 W |
| Flatwoods | Populated Place | 225 | Meigs | 39 04 13 N | 081 58 37 W |
| Flatwoods Church | Church | 226 | Meigs | 39 04 11 N | 081 58 36 W |
| Flatwoods School (historical) | School | 188 | Scioto | 38 52 18 N | 082 57 10 W |
| Flaugher Ridge | Ridge | 275 | Brown | 38 42 07 N | 083 46 23 W |
| Flaugher School (historical) | School | 261 | Brown | 38 47 07 N | 083 50 34 W |
| Flaugher School (historical) | School | 177 | Brown | 38 42 54 N | 083 46 35 W |
| Fleatown | Populated Place | 274 | Licking | 39 59 35 N | 082 24 17 W |
| Fleaville (historical) | Populated Place | 306 | Knox | 40 23 30 N | 082 27 60 W |
| Flechtner Ditch | Canal | 215 | Sandusky | 41 18 14 N | 083 19 07 W |
| Flechtner Heights | Populated Place | 231 | Wood | 41 11 36 N | 083 25 41 W |
| Fledderjohn School (historical) | School | 282 | Shelby | 40 27 59 N | 084 19 59 W |
| Fleet Branch Cleveland Public Library | Building | | Cuyahoga | 41 27 26 N | 081 38 16 W |
| Fleetwood Park | Populated Place | 298 | Union | 40 15 03 N | 083 21 56 W |
| Flehers Run | Stream | | Hamilton | 39 04 32 N | 084 36 06 W |
| Fleisch Run | Stream | | Preble | 39 39 21 N | 084 49 03 W |
| Fleischmann Gardens | Park | 222 | Hamilton | 39 08 47 N | 084 29 44 W |
| Fleming | Populated Place | 242 | Washington | 39 23 30 N | 081 36 38 W |
| Fleming Falls | Populated Place | 345 | Richland | 40 48 02 N | 082 26 36 W |
| Fleming Falls Assembly of God Church | Church | 393 | Richland | 40 47 04 N | 082 29 41 W |
| Fleming Falls Elementary School | School | 391 | Richland | 40 46 54 N | 082 29 52 W |
| Flemming Park | Park | 201 | Butler | 39 31 05 N | 084 23 48 W |
| Flesh Public Library | Building | 265 | Miami | 40 09 04 N | 084 14 27 W |
| Fletcher | Populated Place | 318 | Miami | 40 08 41 N | 084 06 45 W |
| Fletcher Cemetery | Cemetery | 281 | Allen | 40 41 16 N | 084 05 22 W |
| Fletcher Cemetery | Cemetery | 306 | Guernsey | 40 02 03 N | 081 15 37 W |
| Fletcher Cemetery | Cemetery | 320 | Miami | 40 08 53 N | 084 06 40 W |
| Fletcher Cemetery | Cemetery | 295 | Monroe | 39 42 27 N | 081 02 36 W |
| Fletcher Cemetery | Cemetery | 251 | Van Wert | 40 46 44 N | 084 45 55 W |
| Fletcher Chapel | Church | 349 | Clark | 39 53 37 N | 083 41 47 W |
| Fletcher Chapel | Church | 299 | Fairfield | 39 55 24 N | 082 35 26 W |
| Fletcher Chapel Cemetery | Cemetery | 350 | Clark | 39 53 37 N | 083 41 44 W |
| Fletcher Chapel Cemetery | Cemetery | 301 | Fairfield | 39 55 24 N | 082 35 28 W |
| Fletcher Church (historical) | Church | 305 | Guernsey | 40 02 02 N | 081 15 37 W |
| Fletcher Elementary School | School | 317 | Miami | 40 08 44 N | 084 07 11 W |
| Fletcher Hall | Building | 351 | Portage | 41 08 53 N | 081 20 24 W |
| Fletcher Post Office | Post Office | 319 | Miami | 40 08 40 N | 084 06 45 W |
| Fletcher Presbyterian Churchyard | Cemetery | 314 | Miami | 40 08 48 N | 084 06 48 W |
| Fletcher United Methodist Church | Church | 319 | Miami | 40 08 38 N | 084 06 43 W |
| Fletchers Chapel | Church | 298 | Monroe | 39 42 28 N | 081 02 35 W |
| Flick Cemetery | Cemetery | 234 | Hancock | 40 59 17 N | 083 47 12 W |
| Flickinger Cemetery | Cemetery | 327 | Wayne | 40 54 34 N | 081 47 13 W |
| Flicks Corners | Populated Place | 300 | Portage | 41 05 56 N | 081 00 06 W |
| Flint | Populated Place | 282 | Franklin | 40 07 38 N | 083 00 21 W |
| Flint Cemetery | Cemetery | 354 | Coshocton | 40 18 39 N | 082 11 07 W |
| Flint Cemetery | Cemetery | 279 | Franklin | 40 07 55 N | 083 00 34 W |
| Flint Hill | Populated Place | 333 | Mahoning | 41 04 22 N | 080 38 47 W |
| Flint Post Office (historical) | Post Office | 282 | Franklin | 40 07 35 N | 083 00 20 W |
| Flint Ridge | Ridge | 341 | Licking | 39 59 05 N | 082 12 35 W |
| Flint Ridge Park | Park | 366 | Licking | 39 59 23 N | 082 15 39 W |
| Flint Ridge School (historical) | School | 330 | Muskingum | 40 00 22 N | 082 10 29 W |
| Flint Ridge School (historical) | School | 297 | Perry | 39 45 29 N | 082 06 38 W |
| Flint Run | Stream | | Coshocton | 40 19 11 N | 082 00 40 W |
| Flint Run | Stream | | Hocking | 39 04 18 N | 082 28 17 W |
| Flint Run | Stream | | Washington | 39 32 04 N | 081 39 29 W |
| Flintridge Baptist Church | Church | 244 | Franklin | 39 57 53 N | 082 57 54 W |
| Floating Bethel Church (historical) | Church | 137 | Hamilton | 39 05 43 N | 084 30 14 W |
| Flockton | Populated Place | 186 | Butler | 39 21 08 N | 084 29 27 W |
| Flora | Populated Place | 252 | Meigs | 39 09 53 N | 081 58 42 W |
| Flora Post Office (historical) | Post Office | 258 | Meigs | 39 09 55 N | 081 58 40 W |
| Flora School (historical) | School | 346 | Preble | 39 43 45 N | 084 43 22 W |
| Floral Avenue Church of God | Church | 205 | Hamilton | 39 08 48 N | 084 27 29 W |
| Floral Grove Cemetery | Cemetery | 229 | Williams | 41 34 15 N | 084 24 57 W |
| Floral Grove Cemetery | Cemetery | 264 | Williams | 41 39 54 N | 084 32 46 W |
| Floral Hills Cemetery | Cemetery | 233 | Ross | 39 14 25 N | 082 58 56 W |
| Floral Hills Memory Gardens | Cemetery | 311 | Fairfield | 39 46 03 N | 082 35 26 W |
| Floral Hills Memory Gardens Cemetery | Cemetery | 180 | Scioto | 38 41 08 N | 082 51 08 W |
| Floraville Historic District | Park | 227 | Warren | 39 25 47 N | 084 12 33 W |
| Florence | Populated Place | 201 | Belmont | 40 07 10 N | 080 42 55 W |
| Florence | Populated Place | 250 | Erie | 41 19 24 N | 082 24 50 W |
| Florence | Populated Place | 349 | Madison | 39 50 52 N | 083 32 50 W |
| Florence | Populated Place | 230 | Noble | 39 45 28 N | 081 31 52 W |
| Florence Cemetery | Cemetery | 244 | Erie | 41 19 14 N | 082 25 25 W |
| Florence Cemetery | Cemetery | 244 | Montgomery | 39 48 58 N | 084 12 16 W |
| Florence Cemetery | Cemetery | 237 | Pickaway | 39 40 04 N | 083 05 58 W |
| Florence Christian Church | Church | 250 | Erie | 41 19 22 N | 082 24 57 W |
| Florence Corners School (historical) | School | 251 | Erie | 41 19 21 N | 082 24 54 W |
| Florence Evans Building | Building | 201 | Gallia | 38 52 52 N | 082 22 43 W |
| Florence Post Office (historical) | Post Office | 250 | Erie | 41 19 25 N | 082 24 50 W |
| Florence School (historical) | School | 217 | Pickaway | 39 38 57 N | 083 01 19 W |
| Florence Township School | School | 232 | Erie | 41 19 53 N | 082 21 15 W |
| Florida | Populated Place | 205 | Henry | 41 19 19 N | 084 12 16 W |
| Florida Cemetery | Cemetery | 213 | Henry | 41 19 32 N | 084 12 07 W |
| Florida High School (historical) | School | 213 | Henry | 41 19 27 N | 084 12 21 W |
| Florida Post Office (historical) | Post Office | 205 | Henry | 41 19 20 N | 084 12 15 W |
| Florida United Methodist Church | Church | 208 | Henry | 41 19 20 N | 084 12 19 W |
| Flory School (historical) | School | 327 | Darke | 40 09 47 N | 084 45 14 W |
| Flower Hall | Building | 259 | Butler | 39 30 58 N | 084 43 59 W |
| Flower Hospital | Hospital | 186 | Lucas | 41 40 59 N | 083 33 19 W |
| Flower Hospital | Hospital | 193 | Lucas | 41 42 43 N | 083 41 34 W |
| Flower Memorial Hospital Heliport | Airport | 196 | Lucas | 41 42 39 N | 083 41 34 W |
| Flowerpot Hill | Summit | 334 | Licking | 40 03 29 N | 082 31 32 W |
| Flowers School (historical) | School | 360 | Morrow | 40 42 04 N | 082 47 01 W |
| Fluhart Cemetery | Cemetery | 233 | Fulton | 41 34 37 N | 084 06 47 W |
| Flushing | Populated Place | 391 | Belmont | 40 08 58 N | 081 03 58 W |
| Flushing Area Cemetery | Cemetery | 390 | Belmont | 40 09 02 N | 081 04 10 W |
| Flushing City Cemetery | Cemetery | 390 | Belmont | 40 08 56 N | 081 03 33 W |