| Election Name: | 1990 United States Senate election in Wyoming |
| Country: | Wyoming |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1984 United States Senate election in Wyoming |
| Previous Year: | 1984 |
| Next Election: | 1996 United States Senate election in Wyoming |
| Next Year: | 1996 |
| Election Date: | November 6, 1990 |
| Image1: | Alan Kooi Simpson (cropped).jpg |
| Nominee1: | Alan K. Simpson |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 100,784 |
| Percentage1: | 63.94% |
| Nominee2: | Kathy Helling |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 56,848 |
| Percentage2: | 36.06% |
| Map Size: | 255px |
| U.S. Senator | |
| Before Election: | Alan K. Simpson |
| Before Party: | Republican Party (United States) |
| After Election: | Alan K. Simpson |
| After Party: | Republican Party (United States) |
The 1990 United States Senate election in Wyoming was held November 6, 1990. Incumbent Republican U.S. Senator Alan K. Simpson was elected to a third term in office.