As a member of the senior national team for more than a decade, Hyun competed in two FIBA World Cups (1994, 1998), three Asian Games (1994, 1998, 2002), four FIBA Asia Cups (1995, 1997, 1999, 2005), one Olympics (1996) and one East Asian Games (1997). Hyun is noted for leading the South Korean squad in winning its first Asian Games gold medal after 20 years during the 2002 Asian Games despite being injured.