Kim Sung-il (김성일) may refer to:
Kim Sŏngil (born 1538) (1538–1593), Joseon Dynasty politician Kim Sung-il (general) (born 1948) Kim Sung-il (footballer) (born 1973) Kim Seoung-il (born 1990), South Korean short track speed skater Kim Song-il (North Korean politician) Kim Song-il (gymnast), North Korean gymnast Sung-il Kim (born 1974), South Korean writer of science fiction, fantasy, and horror See also Kim Il Sung (1912–1994), North Korean leader and revolutionary Kim Seung-il (disambiguation) (김승일)