| Election Name: | 1867 United States Senate election in California |
| Type: | presidential |
| Ongoing: | no |
| Flag Image: | First Bear Flag of California (1846).svgborder |
| Previous Election: | 1863 United States Senate election in California |
| Previous Year: | 1863 |
| Next Election: | 1873 United States Senate special election in California |
| Next Year: | 1873 (special) |
| Election Date: | December 20, 1867 |
| Votes For Election: | Majority vote of both houses needed to win |
| 1Blank: | Joint session |
| 2Blank: | Percentage |
| Image1: | Eugene Casserly - Brady-Handy 3x4.jpg |
| Nominee1: | Eugene Casserly |
| Party1: | Democratic Party (United States) |
| 1Data1: | 44 |
| 2Data1: | 64.71% |
| Nominee2: | Joseph P. Hoge |
| Party2: | Democratic Party (United States) |
| 1Data2: | 23 |
| 2Data2: | 33.82% |
| Senator | |
| Before Election: | John Conness |
| Before Party: | Republican Party (United States) |
| After Election: | Eugene Casserly |
| After Party: | Democratic Party (United States) |
The 1867 United States Senate election in California was held on December 20, 1867, 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 Democratic State Printer Eugene Casserly was elected over fellow Democratic former Congressman from Illinois Joseph P. Hoge.[1] Casserly and Hoge opposed each other over a dispute regarding an alleged deal that Hoge would let Casserly's protege Henry Huntly Haight run for Governor in exchange for Casserly backing Hoge for Senator.[2]