Jang In-sub is a South Korean actor. He is best known for his supporting roles in Special Affairs Team TEN Season 2, Secret Door and Mrs. Cop. Lee also appeared in the famous and popular drama of School series, Who Are You: School 2015 as Seong Yoon Jae.

Special Affairs Team TEN is a South Korean crime procedural television series starring Joo Sang-wook, Jo An, Kim Sang-ho and Choi Woo-shik. It was broadcast by cable channel OCN.