F.CUZ (Korean: 포커즈, pronounced as 'Focus'), is a South Korean boy band. Originally a 4 member group, they made their debut on January 8, 2010 with their first single, "Jiggy". With the departure of Lee U on May 21st 2011, F.Cuz continued promoting as a 3 member group, Jinon (Leader), Kan and Yejun. In the beginning of 2012 they were joined by Daegun. In April 2012 they were joined by Raehyun, making them a total of five. They are under CAN&J Entertainment.
As of March 2012 their group name stands for "For Century Ultimate Zest".