The 2021 season is FC Seoul's 38th season in the K League 1.
Pre-season
First Winter Training Camp: In Changwon, South Korea - From 7 January 2021 to 27 January 2021 Second Winter Training Camp: In Jeju, South Korea - From 1 February 2021 to 21 February 2021
Pre-season match results
Competitions
Overview
K League 1
League table
Results summary
Results by round
Matches
FA Cup
Match reports and match highlights
Fixtures and Results at FC Seoul Official Website
Season statistics
K League 1 records
All competitions records
Attendance records
Season total attendance is K League 1, FA Cup, and AFC Champions League combined
Squad statistics
Goals
Coaching staff
Park Jin-sub era (–6 September 2021)
An Ik-soo era (6 September 2021–)
Players
Team squad
All players registered for the 2021 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 Gimcheon Sangmuu for military service in the middle of the season (registered in 2021 season). ※ Conscripted: Transferred to Gimcheon Sangmu for military service after the end of the season.