| Election Name: | 1988 United States Senate election in California |
| Country: | California |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1982 United States Senate election in California |
| Previous Year: | 1982 |
| Next Election: | 1992 United States Senate special election in California |
| Next Year: | 1992 (special) |
| Election Date: | November 8, 1988 |
| Image1: | PeteWilson (3x4a).jpg |
| Nominee1: | Pete Wilson |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 5,143,409 |
| Percentage1: | 52.79% |
| Nominee2: | Leo T. McCarthy |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 4,287,253 |
| Percentage2: | 44.00% |
| Map Size: | 300px |
| U.S. Senator | |
| Before Election: | Pete Wilson |
| Before Party: | Republican Party (United States) |
| After Election: | Pete Wilson |
| After Party: | Republican Party (United States) |
The 1988 United States Senate election in California took place on November 8, 1988. Incumbent Senator Pete Wilson won re-election to a second term.
As of, this is the last time a Republican won a U.S. Senate election in California. This was also the first time since 1952 that an incumbent Senator was re-elected to this seat.