Iwata (written: lit. "rock ricefield") is a Japanese surname. Notable people with the surname include:
, Japanese golfer Karen Iwata (born 1998), Japanese singer Kiyomi Iwata (born 1941), Japanese-American artist Manzo Iwata (1924–1993), Japanese martial artist Masaharu Iwata (born 1966), Japanese video game composer Minoru Iwata (born 1983), Japanese baseball pitcher Mitsuo Iwata (born 1967), Japanese voice actor Nakayama Iwata (1895–1949), Japanese photographer Satoru Iwata (1959–2015), Japanese businessman Sayuri Iwata (born 1990), Japanese actress and J-Pop artist Shinji Iwata (born 1987), Japanese baseball pitcher Takuya Iwata (footballer, born 1983), Japanese footballer Takuya Iwata (footballer, born 1994), Japanese footballer Troy Iwata (born 1991), American comedian, actor, and singer , Japanese jockey Yasuo Iwata (1942–2009), Japanese voice actor , Japanese film director and illustrator