| Election Name: | 1891 United States Senate election in California |
| Type: | presidential |
| Ongoing: | no |
| Flag Image: | First Bear Flag of California (1846).svgborder |
| Previous Election: | 1885 United States Senate election in California |
| Previous Year: | 1885 |
| Next Election: | 1895 United States Senate special election in California |
| Next Year: | 1895 (special) |
| Election Date: | January 13, 1891 |
| Votes For Election: | Majority vote of each house needed to win |
| 1Blank: | Senate |
| 2Blank: | Percentage |
| 3Blank: | House |
| 4Blank: | Percentage |
| Image1: | Leland Stanford, photographed in 1890 3x4.png |
| Nominee1: | Leland Stanford |
| Party1: | Republican Party (United States) |
| 1Data1: | 27 |
| 2Data1: | 69.23% |
| 3Data1: | 59 |
| 4Data1: | 75.64% |
| Nominee2: | Stephen M. White |
| Party2: | Democratic Party (United States) |
| 1Data2: | 12 |
| 2Data2: | 30.77% |
| 3Data2: | 18 |
| 4Data2: | 23.08% |
| Senator | |
| Before Election: | Leland Stanford |
| Before Party: | Republican Party (United States) |
| After Election: | Leland Stanford |
| After Party: | Republican Party (United States) |
The 1891 United States Senate election in California was held on January 13, 1891, by the California State Legislature to elect a U.S. Senator (Class 3) to represent the State of California in the United States Senate. Incumbent Republican Senator Leland Stanford was re-elected to a second term in office, defeating Democratic Lieutenant Governor Stephen M. White.[1]