The Boys Singles tournament of the 2013 BWF World Junior Championships was held from October 29 until November 3. Last year champion, Kento Momota couldn't defend his title due to the age eligibility.
South Korean Heo Kwang-hee won the gold medal after beating Wang Tzu-wei from Chinese Taipei 21–11, 21–12 in the final. It was first boys single gold medal for South Korea after 7 years.