2020 FC Seoul season

The 2020 season is FC Seoul's 37th season in the K League 1.

Pre-season

 * In Algarve, Portugal: From 30 December 2019 to 21 January 2020

Match reports and match highlights
Fixtures and Results at FC Seoul Official Website 

Attendance records

 * Season total attendance is K League 1, FA Cup, and AFC Champions League combined

Team squad
All players registered for the 2020 season are listed.

Out on loan and military service
Note: Where a player has not declared an international allegiance, nation is determined by place of birth.

※ In: Transferred from other teams in the middle of the season.

※ Out: Transferred to other teams in the middle of the season.

※ Discharged: Transferred from Sanjgu Sangmu for military service in the middle of the season (registered in 2020 season).

※ Conscripted: Transferred to Sanjgu Sangmu for military service after the end of the season.