Inchon Kim Seong-su (1891–1955) was a South Korean educator, journalist and politician.
Gim Seong-su or Kim Song-su () may also refer to:
Kim Sung-su (director) (born 1961), South Korean film director Kim Sung-soo (actor) (born 1973), South Korean actor Kim Sung-soo (footballer) (born 1963), South Korean footballer Kim Seong-soo (footballer) (born 1992), South Korean footballer