| Election Name: | 1988 Missouri gubernatorial election |
| Country: | Missouri |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1984 Missouri gubernatorial election |
| Previous Year: | 1984 |
| Next Election: | 1992 Missouri gubernatorial election |
| Next Year: | 1992 |
| Election Date: | November 8, 1988 |
| Image1: | File:John Ashcroft official photo as Governor (cropped).jpg |
| Nominee1: | John Ashcroft |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 1,339,531 |
| Percentage1: | 64.2% |
| Nominee2: | Betty Hearnes |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 724,919 |
| Percentage2: | 34.8% |
| Map Size: | 270px |
| Governor | |
| Before Election: | John Ashcroft |
| Before Party: | Republican Party (United States) |
| After Election: | John Ashcroft |
| After Party: | Republican Party (United States) |
The 1988 Missouri gubernatorial election was held on November 8, 1988, and resulted in a victory for the Republican nominee, incumbent Governor John Ashcroft, over the Democratic candidate, State Representative Betty Cooper Hearnes, and Libertarian Mike Roberts.
Betty Hearnes was married to Warren E. Hearnes, who had served as governor from 1965 to 1973.[1] This election was the first time that an incumbent Republican Governor of Missouri was re-elected to a second consecutive term, the most recent being 2020.