List of mayors of Gary, Indiana
This is a list of mayors of Gary, Indiana. The first mayor, Thomas Knotts, served as Town Board president from 1906 to 1909, when Gary officially became a city.
| Portrait | Mayor | Term start | Term end | | Party |
| 1 | | '
| | | | Democratic |
| 2 | | '
| | | | Republican |
| 3 | | ' | | | | Republican |
| 4 | | ' | | | | Republican |
| 5 | | ' | | | | Republican |
| 6 | | ' | | | | Republican |
| 7 | | ' | | | | Republican |
| 8 | | ' | | | | Democratic |
| 9 | | '
| | | | Republican |
| 10 | | '
| | | | Democratic |
| 11 | | ' | | | | Democratic |
| 12 | | ' | | | | Democratic |
| 13 | | '
| | | | Democratic |
| 14 | | '
| | | | Democratic |
| 15 | | '
| | | | Democratic |
| 16 | | '
| | | | Democratic |
| 17 | | '
| | | | Democratic |
| 18 | | '
| | | | Democratic |
| – | | '
| | | | Democratic |
| 19 | | Rudy Clay
| | | | Democratic |
| 20 | | '
| | | | Democratic |
| 21 | | Jerome Prince
| | | | Democratic |
