| Election Name: | United States House of Representatives elections in California, 1904 |
| Country: | California |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | United States House of Representatives elections in California, 1902 |
| Previous Year: | 1902 |
| Next Election: | United States House of Representatives elections in California, 1906 |
| Next Year: | 1906 |
| Seats For Election: | All 8 California seats to the United States House of Representatives |
| Party1: | Republican Party (United States) |
| Last Election1: | 5 |
| Seats1: | 8 |
| Seat Change1: | 3 |
| Popular Vote1: | 186,427 |
| Percentage1: | 56.8% |
| Party2: | Democratic Party (United States) |
| Last Election2: | 3 |
| Seats2: | 0 |
| Seat Change2: | 3 |
| Popular Vote2: | 112,587 |
| Percentage2: | 34.3% |
| Map Size: | 250px |
The United States House of Representatives elections in California, 1904 was an election for California's delegation to the United States House of Representatives, which occurred as part of the general election of the House of Representatives on November 8, 1904. Republicans won the three Democratic-held districts, giving California an all-Republican House delegation, which it would maintain until 1910.
| United States House of Representatives elections in California, 1904 | ||||||
|---|---|---|---|---|---|---|
| Party | Votes | Percentage | Seats | +/– | ||
| Republican | 186,427 | 56.8% | 8 | +3 | ||
| Democratic | 112,587 | 34.3% | 0 | -3 | ||
| Socialist | 21,635 | 6.6% | 0 | 0 | ||
| Prohibition | 6,405 | 2.0% | 0 | 0 | ||
| Union Labor | 916 | 0.3% | 0 | 0 | ||
| Totals | 327,970 | 100.0% | 8 | — | ||
| Pre-election | Seats | |
| Republican-Held | 5 | |
| Democratic-Held | 3 | |
| Post-election | Seats | |
| Republican-Held | 8 | |