Monday Kiz (Korean: 먼ë°ì´ äì¦Â) was a South Korean boy band formed in 2005. The group originally consisted of two members: Lee Jin-sung and Kim Min-soo, but after the death of Min-soo in 2008 the group reformed with two new members: Han Seung-hee and Lim Han-byul, accompanied by original member Jin-sung. Monday Kiz released their first album, Bye Bye Bye on October 6, 2005.
Lee Jin-sung currently promotes as a soloist using the Monday Kiz name.