| Election Name: | 1980 United States Senate election in Alabama |
| Country: | Alabama |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1978 United States Senate special election in Alabama |
| Previous Year: | 1978 (special) |
| Next Election: | 1986 United States Senate election in Alabama |
| Next Year: | 1986 |
| Election Date: | November 4, 1980 |
| Image1: | JeremiahDentonSenate (cropped).jpg |
| Nominee1: | Jeremiah Denton |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 650,363 |
| Percentage1: | 50.15% |
| Nominee2: | Jim Folsom |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 610,175 |
| Percentage2: | 47.05% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Donald Stewart |
| Before Party: | Democratic Party (United States) |
| After Election: | Jeremiah Denton |
| After Party: | Republican Party (United States) |
The 1980 United States Senate election in Alabama took place on November 4, 1980, alongside other elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections. Incumbent Democratic U.S. Senator Donald Stewart, elected in a special election to finish the term of the seat left vacant by the death of Senator James B. Allen, decided to run for a full term, but was defeated in the primary by Jim Folsom, who lost the general election to Republican Jeremiah Denton.
Denton was the first Republican elected to the Senate from Alabama since the end of Reconstruction in 1879 and the first Republican elected since the passage of the 17th Amendment requiring the direct election of senators. He would lose reelection in 1986 to Democratic nominee Richard Shelby, who later joined the Republican Party in 1994.[1]