Kim Kyong-Jin (also Kim Gyeong-Jin, Korean: 김 경진; born February 25, 1986) is a North Korean judoka, who played for the extra-lightweight category. He won two medals, silver and bronze, for the 60 kg division at the Asian Judo Championships (2008 in Jeju City, South Korea and 2009 in Taipei, Taiwan). It is believed that Kim is an illegitimate son of North Korea’s founder, Kim Il-sung, and his then-mistress Kim Ok, who was a musician at the time of his birth. Kim Ok would later serve as secretary and mistress to Kim Il-sung’s son, Kim Jong-il.