Dong Hyun Kim (Korean: 김동현, 金東炫; born November 17, 1981) is a South Korean mixed martial artist currently fighting in the UFC's welterweight division. He was signed by the UFC after fighting in the Japanese promotion DEEP and in the South Korean promotion Spirit MC. As of 9 August, 2017, he is #12 in official UFC welterweight rankings.

金东炫（朝鲜语：김동현 Kim DongHyun，英语：Dong Hyun Kim），韩国综合格斗家，外号“电击枪”，曾活跃于韩国Spirit MC和日本DEEP赛事。2008年进军世界最大格斗赛事UFC终极格斗冠军赛，成为亚洲名将，并于UFC 207缔造亚洲人在UFC战绩最多胜场（13胜），2017年2月1日在UFC次中量级官方排名第六 。