List of mayors of New Castle, Indiana
This is a list of mayors of New Castle, Indiana.
| # | Name | Term start | Term end | Party | Comments | |
| 1 | ' | Republican | ||||
| 2 | ' | Republican | ||||
| 3 | ' | Republican | ||||
| 4 | George A. Elliott | Republican | ||||
| 5 | John M. Morris | Republican | ||||
| 6 | ' | Democratic | ||||
| 7 | ' | Democratic | Namesake of Baker Park | |||
| 8 | ' | Republican | ||||
| 9 | Sidney E. Baker | Democratic | ||||
| 10 | ' | Democratic | ||||
| 11 | ' | Republican | ||||
| 12 | Sidney E. Baker | Democratic | ||||
| 13 | ' | Democratic | ||||
| 14 | ' | Democratic | Namesake of Osborne Park | |||
| 15 | ' | Democratic | ||||
| 16 | ' | Democratic | ||||
| 17 | Gerald "Bud" Ayers | Democratic | Park superintendent, 2003–2007 | |||
| 18 | ' | Democratic | 3-term mayor, ran for a fourth term in 2003 and 2007 | |||
| 19 | ' | Democratic | Defeated in the 2007 primary by Sherman Boles | |||
| 20 | ' | Republican | ||||
| 21 | ' | Present | Democratic |