| Election Name: | 1860 Chicago mayoral election |
| Type: | presidential |
| Ongoing: | no |
| Election Date: | March 3, 1860 |
| Previous Year: | 1859 |
| Next Year: | 1861 |
| Image1: | File:John-wentworth (1).jpg |
| Nominee1: | John Wentworth |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 9,998 |
| Percentage1: | 53.36% |
| Nominee2: | Walter S. Gurnee |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 8,739 |
| Percentage2: | 46.64% |
| Mayor | |
| Before Election: | John Charles Haines |
| Before Party: | Republican Party (United States) |
| After Election: | John Wentworth |
| After Party: | Democratic Party (United States) |
In the Chicago mayoral election of 1860, Democratic nominee John Wentworth defeated Republican nominee Walter S. Gurnee.
Both candidates had served as mayor before. Incidentally, each had previously been mayor under the opposite party affiliation. Gurnee had served two terms as a Democrat, having been elected in 1851 and 1852, Wentworth had previously served one term as a Republican, having been elected in 1857.
The election was held on March 3.[1]