Denny Kantono (Chinese: 关有明, born January 12, 1970) is a retired Chinese-Indonesian badminton player who specialized in men's doubles. He shared numerous international titles with his regular partner Antonius Ariantho including the French (1993), Hong Kong (1993), Denmark (1994), Thailand (1994), Chinese Taipei (1995, 1999), and Indonesia (1996) Opens; as well as the (now defunct) Badminton World Cup (1996) and World Badminton Grand Prix (1998) events. They were runners-up at the prestigious All-England Championships in 1995 and bronze medalists at the 1996 Olympics in Atlanta.
Kantono competed in badminton at the 1996 Summer Olympics in men's doubles, with Antonius Ariantho, and won a bronze medal. They lost in semifinals against Cheah Soon Kit and Yap Kim Hock, of Malaysia, 15-10, 15-4, and in the bronze medal match they defeated Soo Beng Kiang and Tan Kim Her, of Malaysia, 15-4, 12-15, 15-8.