| Post: | Mayor |
| Body: | Sejong City |
| Flag: | Symbol of Sejong.png |
| Flagsize: | 180px |
| Flagcaption: | Seal of Sejong City |
| Incumbent: | Choi Min-ho |
| Incumbentsince: | 1 July 2022 |
| Termlength: | Four years |
| Inaugural: | Yoo Han-sik |
The Mayor of Sejong City is the head of the local government of Sejong City who is elected to a four-year term.
| Term | Portrait | Name | Term of office | Political party | Elected | ||||
|---|---|---|---|---|---|---|---|---|---|
| Took office | Left office | Time in office | |||||||
| 5th | Korean: 유한식<br>兪漢植 | 1 July 2012 | 30 June 2014 | Liberty Forward → Saenuri | 2012 | ||||
| 6th | Lee Choon-hee Korean: 이춘희<br>李春熙 | 1 July 2014 | 30 June 2022 | NPAD → Democratic | 2014 | ||||
| 7th | 2018 | ||||||||
| 8th | Korean: 최민호<br>崔旼鎬 | 1 July 2022 | Incumbent | People Power | 2022 | ||||
Source:[1]
| 2012 Sejong mayoral by-election | |||||||
|---|---|---|---|---|---|---|---|
| Party | Candidate | Votes | Percentage | ||||
| Liberty Forward | 3 | Yoo Han-sik | 19,387 | 41.73% | |||
| Democratic United | 2 | Lee Choon-hee | 17,349 | 37.35% | |||
| Saenuri | 1 | Choi Min-ho | 9,716 | 20.92% | |||
| Total | 46,452 | align=right colspan=2 | 100.00% | ||||
| Voter turnout | 59.14% | ||||||
| 2014 Sejong mayoral election | |||||||
|---|---|---|---|---|---|---|---|
| Party | Candidate | Votes | Percentage | ||||
| NPAD | 2 | Lee Choon-hee | 36,203 | 57.78% | |||
| 1 | Yoo Han-sik | 26,451 | 42.21% | ||||
| Total | 62,654 | align=right colspan=2 | 100.00% | ||||
| Voter turnout | 62.65% | ||||||
| 2018 Sejong mayoral election | |||||||
|---|---|---|---|---|---|---|---|
| Party | Candidate | Votes | Percentage | ||||
| Democratic | 1 | Lee Choon-hee | 96,896 | 71.30% | |||
| Liberty Korea | 2 | Song Ah-young | 24,546 | 18.06% | |||
| Bareunmirae | 3 | Heo Chul-hue | 14,444 | 10.62% | |||
| Total | 135,886 | align=right colspan=2 | 100.00% | ||||
| Voter turnout | 61.75% | ||||||
| 2022 Sejong mayoral election | |||||||
|---|---|---|---|---|---|---|---|
| Party | Candidate | Votes | Percentage | ||||
| People Power | 2 | Choi Min-ho | 78,415 | 52.83% | |||
| Democratic | 1 | Lee Choon-hee | 69,995 | 47.16% | |||
| Total | 148,410 | align=right colspan=2 | 100.00% | ||||
| Voter turnout | 51.24% | ||||||