| Election Name: | 1990 Iowa gubernatorial election |
| Country: | Iowa |
| Flag Image: | Flag of Iowa (xrmap collection).svg |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1986 Iowa gubernatorial election |
| Previous Year: | 1986 |
| Next Election: | 1994 Iowa gubernatorial election |
| Next Year: | 1994 |
| Election Date: | November 8, 1990 |
| Image1: | File:Terry Branstad attends recommissioning ceremony for USS Iowa, Apr 28, 1984.JPEG |
| Nominee1: | Terry Branstad |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 591,852 |
| Percentage1: | 60.6% |
| Nominee2: | Donald Avenson |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 379,372 |
| Percentage2: | 38.9% |
| Map Size: | 240px |
| Governor | |
| Before Election: | Terry Branstad |
| Before Party: | Republican Party (United States) |
| After Election: | Terry Branstad |
| After Party: | Republican Party (United States) |
The 1990 Iowa gubernatorial election took place November 8, 1990. Incumbent Republican Governor of Iowa Terry Branstad ran for re-election to a third term as governor. On the Democratic side, state representative Donald Avenson won his party's nomination and both Branstad and Avenson moved on to the general election. Branstad won re-election to a third term as governor, defeating Avenson by a margin of over 20 points.