| Election Name: | 1916 United States Senate election in Washington |
| Country: | Washington |
| Flag Image: | Flag of Washington (1923–1967).svg |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1911 United States Senate election in Washington |
| Previous Year: | 1911 |
| Next Election: | 1922 United States Senate election in Washington |
| Next Year: | 1922 |
| Election Date: | November 7, 1916 |
| Image1: | File:MilesPoindexter.jpg |
| Nominee1: | Miles Poindexter |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 202,287 |
| Percentage1: | 55.39% |
| Nominee2: | George Turner |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 135,339 |
| Percentage2: | 37.06% |
| Image3: | File:3x4.svg |
| Nominee3: | Bruce Rogers |
| Party3: | Socialist Party (United States) |
| Popular Vote3: | 21,709 |
| Percentage3: | 5.95% |
| Map Size: | 270px |
| U.S. Senator | |
| Before Election: | Miles Poindexter |
| Before Party: | Republican Party (US) |
| After Election: | Miles Poindexter |
| After Party: | Republican Party (US) |
The 1916 United States Senate election in Washington was held on November 7, 1916. Incumbent Republican Miles Poindexter was running for a second term in office over Democratic former Senator George Turner and Socialist Bruce Rogers.
Primary elections were held on September 12.[1] Poindexter overcame a strong primary challenge from U.S. Representative William E. Humphrey and college president Enoch Albert Bryan.
Thompson was unopposed for the Progressive nomination.