2014 Seattle Sounders FC season

The 2014 Seattle Sounders FC season was the club's sixth season in Major League Soccer, the United States' top-tier of professional soccer. Including previous Seattle Sounders franchises, this was the 34th season of a soccer team playing in the Seattle metro area.

The Sounders earned a double for the first time in club history—winning their fourth U.S. Open Cup title and first Supporters' Shield as the best team in the MLS regular season. The team were the first to win 20 matches in the post-shootout era after a slow start to the season. During the 2014 season, the Sounders earned the most points (64) and scored the most goals (65) in the club's MLS history. The team's attempt to complete the league's first domestic treble in the MLS Cup Playoffs was halted by a loss to the LA Galaxy—Shield runners-up and later MLS Cup champions—in the Western Conference Final.

The 2014 season is the best Sounders' regular season to date. This is the only Supporters' Shield won by the club; moreover, this is the only time the team has finished atop the MLS Western Conference. Despite this, Seattle would go on to play in four MLS Cups in a five-season span between and 2020, winning in 2016 and 2019, and win the 2022 CONCACAF Champions League.