2021 League of Legends Champions Korea Challengers League Summer

2021 LCK Challengers League Summer on its second splif of Korea's secondary league featuring rosters from all ten LCK organizations. Organized by KeSPA, and VSPN KOREA and sponsored by Woori Bank.

Group Stage will be played in a Double round-robin, all matches are best-of-one series. The top six teams will qualify for Playoffs.