They competed in the 2021 K League 1 and the FA Cup.

[1] The age of the players is stated as of 1 March 2021.

Source: Suwon Samsung Bluewings Last updated: 5 December 2021 Source: Soccerway Last updated: 5 December 2021.

Source: kleague All times are Korea Standard Time (KST) – UTC+9 Video assistant referee: Kim Woo-Sung Video assistant referee: Kim Woo-Sung Video assistant referee: Kim Jong-hyeok Video assistant referee: Kim Dae-yong Video assistant referee: Kim Young-su Video assistant referee: Kim Hee-gon Video assistant referee: Park Byung-jin Video assistant referee: Song Min-seok Video assistant referee: Mae Ho-young Video assistant referee: Kim Young-su Video assistant referee: Mae Ho-young Video assistant referee: Kim Jong-hyeok Video assistant referee: Kim Jong-hyeok Video assistant referee: Kim Sung-ho Video assistant referee: Ko Hyung-jin Video assistant referee: Ko Hyung-jin Video assistant referee: Song Min-seok Video assistant referee: Kim Jong-hyeok Video assistant referee: Kim Sung-ho Video assistant referee: Kim Sung-ho Video assistant referee: Ko Hyung-jin Video assistant referee: Kim Dong-jin Video assistant referee: Kim Sung-ho Video assistant referee: Chae Sang-hyeop Video assistant referee: Kim Jong-hyeok Video assistant referee: Kim Dong-jin Video assistant referee: Kim Jong-hyeok Video assistant referee: Lee Dong-jun Video assistant referee: Kim Sung-ho Video assistant referee: Kim Jong-hyeok Video assistant referee: Kim Sung-ho Video assistant referee: Mae Ho-young Video assistant referee: Song Min-seok Video assistant referee: Mae Ho-young Video assistant referee: Jeong Dong-sik Video assistant referee: Kim Sung-ho Video assistant referee: Kim Dong-jin Video assistant referee: Shin Yong-jun The draw for the first four rounds was held on 4 February 2021.

[13] The quarter-finals draw was made by Kim Byung-ji on Monday, 14 June.