The 2019 Seattle Sounders FC season was the club's eleventh season in Major League Soccer, the United States' top-tier of professional soccer. The 2019 season was Brian Schmetzer's third full MLS season as head coach of the Sounders. Seattle-based Zulily became the official jersey sponsor of the Sounders in the 2019 season. Sounders FC won their second MLS Cup title at the end of the season, playing in front of a franchise-record 69,274 fans at CenturyLink Field.