| Election Name: | 1980 United States Senate election in California |
| Country: | California |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1974 United States Senate election in California |
| Previous Year: | 1974 |
| Next Election: | 1986 United States Senate election in California |
| Next Year: | 1986 |
| Image1: | AlanCranston.jpg |
| Nominee1: | Alan Cranston |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 4,705,399 |
| Percentage1: | 56.51% |
| Nominee2: | Paul Gann |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 3,093,426 |
| Percentage2: | 37.15% |
| Map Size: | 300px |
| U.S. Senator | |
| Before Election: | Alan Cranston |
| Before Party: | Democratic Party (United States) |
| After Election: | Alan Cranston |
| After Party: | Democratic Party (United States) |
The 1980 United States Senate election in California took place on November 4, 1980. Incumbent Democrat U.S. Senator Alan Cranston easily won re-election to a third term, even as the state's former Republican governor, Ronald Reagan, won a landslide victory in the concurrent presidential election, and a target of the National Conservative Political Action Committee.
Primary elections were held on June 3, 1980.