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. Every mayor since 1943 has served as a member of the Democratic Party.
| Portrait | Mayor | Term start | Term end | class=unsortable | ||||
|---|---|---|---|---|---|---|---|---|
| 1 | (1861–1921; aged 60) | [1] | bgcolor= | Democratic[2] | ||||
| 2 | (1st) (1872–1938; aged 66) | bgcolor= | Republican | |||||
| 3 | bgcolor= | Republican | ||||||
| 4 | (2nd) | [3] | bgcolor= | Republican | ||||
| 5 | bgcolor= | Republican | ||||||
| 6 | bgcolor= | Republican | ||||||
| 7 | (3rd) | bgcolor= | Republican | |||||
| 8 | bgcolor= | Democratic | ||||||
| 9 | (1879–?) | bgcolor= | Republican | |||||
| 10 | (1905–07.11.1992; aged 87) | bgcolor= | Democratic | |||||
| 11 | bgcolor= | Democratic | ||||||
| 12 | [4] | bgcolor= | Democratic | |||||
| 13 | (11.02.1908–17.08.1983; aged 75) | [5] | bgcolor= | Democratic | ||||
| 14 | (26.12.1915–01.04.2017; aged 101) | bgcolor= | Democratic | |||||
| 15 | (1917–1995; aged 78) | bgcolor= | Democratic | |||||
| 16 | (1933–2019; aged 86) | bgcolor= | Democratic | |||||
| 17 | (born in 1936; age) | bgcolor= | Democratic | |||||
| 18 | (born in 1951; age) | [6] | bgcolor= | Democratic | ||||
| – | (born in 1931; age) | [7] | bgcolor= | Democratic | ||||
| 19 | Rudy Clay (1935–2014; aged 78) | bgcolor= | Democratic | |||||
| 20 | (born in 1960; age) | bgcolor= | Democratic | |||||
| 21 | (born in 1964; age) | [8] | bgcolor= | Democratic | ||||
| 22 | (born in 1980; age) | incumbent[9] | bgcolor= | Democratic |