Kong Ja-young (; born 30 July 1985 in Seoul, South Korea) is a female South Korean Judoka. She is a graduate of Yong In University.
Kong won a silver medal at the 2006 Asian Games and competed in the 2008 Summer Olympics. She went on to win a bronze medal at the 2010 Guangzhou Asian Games and competed in the 2011 World Championships.
As of 2016, Kong works as a policewoman in the Seoul Metropolitan Police Agency, serving Gangseo District.