| Election Name: | 2013 Washington State Senate 26th District special election |
| Country: | Washington |
| Type: | by-election |
| Vote Type: | Popular |
| Seats For Election: | Washington's 26th state senate district |
| Ongoing: | no |
| Party Color: | yes |
| Party Name: | yes |
| Previous Election: | Washington State Senate election, 2012 |
| Previous Year: | 2012 |
| Next Election: | Washington State Senate election, 2014 |
| Next Year: | 2014 |
| Candidate1: | Jan Angel |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 11,162 |
| Percentage1: | 51.9% |
| Candidate2: | Nathan Schlicher |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 10,183 |
| Percentage2: | 47.3% |
| Senator | |
| Before Election: | Nathan Schlicher |
| Before Party: | Democratic Party (United States) |
| Posttitle: | Senator |
| After Election: | Jan Angel |
| After Party: | Republican Party (United States) |
A special election was held on November 5, 2013,[1] to elect a senator to fill the rest of Derek Kilmer's term in the Washington State Senate representing the 26th district.
The seat was left vacant after incumbent Derek Kilmer was elected to the U.S. House in November 2012. Nathan Schlicher was appointed to the seat two weeks after Derek Kilmer was sworn in.
The election was contested between Nathan Schlicher of the Democratic Party and Jan Angel of the Republican Party, who advanced as the top two finishers in the August primary.
Jan Angel won the election by about five percent, giving the Republican caucus a 24–25 minority for the 2014 session over previously having a 23-26 minority during the 2013 session.