| Election Name: | 1891 United States Senate special election in California |
| Type: | presidential |
| Ongoing: | no |
| Flag Image: | First Bear Flag of California (1846).svgborder |
| Previous Election: | 1887 United States Senate election in California |
| Previous Year: | 1887 |
| Next Election: | 1893 United States Senate election in California |
| Next Year: | 1893 |
| Election Date: | March 19, 1891 |
| Votes For Election: | Majority vote of both houses needed to win |
| 1Blank: | Joint session |
| 2Blank: | Percentage |
| Image1: | Felton, Hon. C.A 3x4.jpg |
| Nominee1: | Charles N. Felton |
| Party1: | Republican Party (United States) |
| 1Data1: | 73 |
| 2Data1: | 61.86% |
| Nominee2: | Stephen M. White |
| Party2: | Democratic Party (United States) |
| 1Data2: | 28 |
| 2Data2: | 23.72% |
| Image3: | Morris M. Estee (U.S. delegate) 3x4 Alt.jpg |
| Nominee3: | Morris Estee |
| Party3: | Republican Party (United States) |
| 1Data3: | 15 |
| 2Data3: | 12.71% |
| Senator | |
| Before Election: | George Hearst |
| Before Party: | Democratic Party (United States) |
| After Election: | Charles N. Felton |
| After Party: | Republican Party (United States) |
The 1891 United States Senate special election in California was held on March 19, 1891, by the California State Legislature to elect a U.S. Senator (Class 1) to represent the State of California in the United States Senate. In a special joint session, former Republican Congressman Charles N. Felton was elected over Democratic Lieutenant Governor Stephen M. White and former Republican Speaker of the State Assembly Morris Estee.[1]