Kim Kwang-kyu is a South Korean actor. He made his acting debut in 1999 in Dr. K, and its director fellow Busan native Kwak Kyung-taek later cast him in a small but memorable role as a physically abusive teacher in the 2001 box-office hit Friend. Kim continued acting in both television and film as a supporting actor, notably in Couple or Trouble (2006), The Secret of Coocoo Island (2008), Scent of a Woman (2011), and I Can Hear Your Voice (2013). He also appears on the reality shows I Live Alone and Three Meals a Day (2015).

Couple or Trouble is a 2006 South Korean television series loosely based on the 1987 Hollywood film Overboard. Starring Han Ye-seul and Oh Ji-ho, it aired on MBC from October 14 to December 3, 2006, on Saturdays and Sundays at 21:40 for 16 episodes. The romantic comedy series was popular in the ratings, and received recognition at the MBC Drama Awards.