| Election Name: | Chicago mayoral election, 1859 |
| Type: | presidential |
| Ongoing: | no |
| Previous Year: | 1858 |
| Next Year: | 1860 |
| Election Date: | March 1, 1859 |
| Image1: | File:John-haines (a).jpg |
| Candidate1: | John Charles Haines |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 8,587 |
| Percentage1: | 52.63% |
| Candidate2: | Marcus D. Gilman |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 7,728 |
| Percentage2: | 47.37% |
| Mayor | |
| Before Election: | John Charles Haines |
| Before Party: | Republican Party (United States) |
| After Election: | John Charles Haines |
| After Party: | Republican Party (United States) |
In the 1859 Chicago mayoral election, incumbent Republican John Charles Haines defeated Democratic challenger Marcus D. Gilman.
The election was held on March 1.[1]