Kim Ji-hyun (Korean: ???; Hanja: ???; born 10 September 1974), also known as Jihyun Marr, is a former South Korean badminton player.
She participated at the 1996 and 2000 Summer Olympics in the women's singles event.
Kim who affiliated with the Samsung Electro-Mechanics team, won the women's singles title at the National Championships tournament in 1997 and 1998.
She announced her retirement from the international tournament after the 2001 Korea Open.She was a former coach at the BWF training academy in Saarbrucken, later joined the New Zealand, Korean, and Indian national team.
Earlier in 2019, she helped India get its first gold in BWF World Championships in Basel where P.V.Sindhu became India's first badminton player to become World Champion.
She worked as a coach for Indian national team until September 2019 when she resigned to take care of her ailing husband.