Which Stray Kids member left the group in 2019?

Woojin was the Stray Kids member who left the group in 2019. JYP Entertainment announced his departure on October 28, 2019, citing personal circumstances and ending his exclusive contract. The announcement came before the release of the group's album Clé: Levanter, whose schedule was postponed as a result.

Woojin had been part of Stray Kids from its pre-debut survival-show period and appeared on the group's early releases. After his departure, Stray Kids continued as an eight-member group consisting of Bang Chan, Lee Know, Changbin, Hyunjin, Han, Felix, Seungmin, and I.N. Their first music video released after the announcement was "Astronaut," followed by the reworked Clé: Levanter.

The reason for Woojin's departure has never been publicly explained in specific detail beyond the official reference to personal circumstances. He later pursued solo music and acting independently, so he should not be confused with a current Stray Kids member.