Amir Khan (born 8 December 1986) is a British professional boxer and two-time former world champion, having held the WBA and IBF light welterweight titles. He currently holds the WBC Silver welterweight title, and has fought at three weight classes: lightweight, light welterweight, and welterweight.Khan is the youngest British Olympic boxing medalist, winning silver at the 2004 Athens Olympics, at the age of 17.