Kim Seong-hun () is a Korean name consisting of the family name Kim and the given name Seong-hun, and may also refer to:
Kim Sung-hoon (biologist) (born 1958), South Korean biologist Kim Seong-hun (filmmaker) (born 1971), South Korean filmmaker Kim Sung-hoon (director) (born 1974), South Korean film director Sung-hoon Kim (born 1978), South Korean pianist Kim Sung-hun (politician), a North Korean politician Kim Sung-hoon, birth name of the actor Ha Jung-woo