| Election Name: | 1977 St. Louis mayoral election |
| Flag Image: | Flag of St. Louis, Missouri.svg |
| Previous Election: | 1973 St. Louis mayoral election |
| Previous Year: | 1973 |
| Election Date: | April 5, 1977 |
| Next Election: | 1981 St. Louis mayoral election |
| Next Year: | 1981 |
| Turnout: | 16.68% |
| Candidate1: | James F. Conway |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 69,567 |
| Percentage1: | 67.01% |
| Candidate2: | James Stemmler |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 16,910 |
| Percentage2: | 16.29% |
| Candidate3: | Bill Clay |
| Party3: | Independent (politician) |
| Popular Vote3: | 16,877 |
| Percentage3: | 16.26% |
| Ongoing: | No |
| Map Size: | 200px |
| Mayor | |
| Before Election: | John Poelker |
| Before Party: | Democratic Party (United States) |
| After Election: | James F. Conway |
| After Party: | Democratic Party (United States) |
The 1977 St. Louis mayoral election was held on April 5, 1977[1] to elect the mayor of St. Louis, Missouri. It saw the election of James F. Conway. Incumbent mayor John Poelker decided not to seek a second term.
The election was preceded by party primaries on March 8.[2]