| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| OH-01 | Steve ChabotREP | REP | 201,518 | 51.5% | R+5.5 |
| OH-02 | Jean SchmidtREP | REP | 237,845 | 58.5% | R+23.8 |
| OH-03 | REP | 224,084 | 68.1% | R+36.2 | |
| OH-04 | Jim JordanREP | REP | 204,270 | 71.5% | R+46.8 |
| OH-05 | REP | 207,453 | 67.8% | R+41.4 | |
| OH-06 | Bill JohnsonREP | REP | 205,575 | 50.2% | R+5.0 |
| OH-07 | REP | 218,313 | 62.2% | R+29.9 | |
| OH-08 | REP | 217,436 | 65.6% | R+35.3 | |
| OH-09 | Marcy KapturDEM | DEM | 205,242 | 59.4% | D+18.7 |
| OH-10 | DEM | 191,026 | 53.0% | D+9.2 | |
| OH-11 | DEM | 168,447 | 82.9% | D+65.9 | |
| OH-12 | REP | 269,180 | 55.8% | R+14.8 | |
| OH-13 | Betty SuttonDEM | DEM | 213,173 | 55.7% | D+11.5 |
| OH-14 | REP | 230,865 | 64.9% | R+33.5 | |
| OH-15 | REP | 220,596 | 54.2% | R+12.9 | |
| OH-16 | REP | 220,137 | 52.1% | R+10.8 | |
| OH-17 | Tim RyanDEM | DEM | 190,666 | 53.9% | D+23.8 |
| OH-18 | Bob GibbsREP | REP | 199,448 | 53.9% | R+13.4 |