| Election Name: | 1984 United States Senate election in Wyoming |
| Country: | Wyoming |
| Flag Year: | 1956 |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1978 United States Senate election in Wyoming |
| Previous Year: | 1978 |
| Next Election: | 1990 United States Senate election in Wyoming |
| Next Year: | 1990 |
| Election Date: | November 6, 1984 |
| Image1: | File:Alan Kooi Simpson (cropped).jpg |
| Nominee1: | Alan Simpson |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 146,373 |
| Percentage1: | 78.32% |
| Nominee2: | Victor Ryan |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 40,525 |
| Percentage2: | 21.68% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Alan Simpson |
| Before Party: | Republican Party (United States) |
| After Election: | Alan Simpson |
| After Party: | Republican Party (United States) |
The 1984 United States Senate election in Wyoming took place on November 6, 1984. Incumbent Republican U.S. Senator Alan Simpson was re-elected to a second term in office, defeating Democrat Victor Ryan in a landslide. Alan Simpson won 78.32% of the popular vote in the United States Senate election in Wyoming winning 7.81% more than Ronald Reagan had won in the concurrent presidential election in the state. Alan Simpson won the election by 146,373 votes winning 13,132 more votes than Ronald Reagan had won in the concurrent presidential election.