Ohio's 10th senatorial district has been based in south-central Ohio. It comprises the counties of Clark, Greene and Madison. It encompasses Ohio House districts 73, 74 and 79. It has a Cook PVI of R+7. Its current Ohio SenatorisRepublican Bob Hackett. He resides in Madison County.
| Senator | Party | Term | Notes |
|---|---|---|---|
| Max Dennis | Republican | January 8, 1963 – December 31, 1976 | Dennis did not seek re-election in 1976. |
| John Mahoney | Democrat | January 3, 1977 – December 31, 1980 | Mahoney lost re-election in 1980 to Mike DeWine. |
| Mike DeWine | Republican | January 3, 1981 – December 13, 1982 | DeWine won election to the United States Congress in 1982. |
| Dave Hobson | Republican | December 13, 1982 – January 3, 1991 | Hobson won election to the United States Congress in 1990. |
| Merle G. Kearns | Republican | January 3, 1991 – December 31, 2000 | Kearns was term-limited in 2000. |
| Steve Austria | Republican | January 3, 2001 – December 31, 2008 | Austria was term-limited in 2008. |
| Chris Widener | Republican | January 6, 2009 – January 21, 2016 | Widener resigned to work in the private sector. |
| Bob Hackett | Republican | February 23, 2016 – present | Incumbent |