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