| Election Name: | 1990 United States Senate election in Alabama |
| Country: | Alabama |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1984 United States Senate election in Alabama |
| Previous Year: | 1984 |
| Next Election: | 1996 United States Senate election in Alabama |
| Next Year: | 1996 |
| Election Date: | November 6, 1990 |
| Image1: | Howell Heflin HR (1).jpg |
| Nominee1: | Howell Heflin |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 717,814 |
| Percentage1: | 60.57% |
| Nominee2: | Bill Cabaniss |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 467,190 |
| Percentage2: | 39.43% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Howell Heflin |
| Before Party: | Democratic Party (United States) |
| After Election: | Howell Heflin |
| After Party: | Democratic Party (United States) |
The 1990 United States Senate election in Alabama was held on November 6, 1990. Incumbent Democratic U.S. Senator Howell Heflin won re-election to a third term. As of 2024, it is the last time a Democrat was elected to the Class 2 Senate seat in Alabama until 2017, and the last time overall in which a Democrat was elected to and served a full term as a Democrat in the U.S. Senate from Alabama.