Ku Min-jung (also Gu Min-jeong, Korean: 구 민정; born August 25, 1973 in Jeollabuk-do) is a retired female South Korean volleyball player. She represented South Korea in two editions of the Olympic Games (2000 and 2004), and also often played as an outside hitter and attacker. Ku was also a member of the South Korea women's national volleyball team who attained a great success in the late 1990s and early 2000s, capturing two silver medals each at the Asian Men's Volleyball Championship (1993 and 1997) and at the Asian Games (1998 and 2002).