Hironaka (written 弘中 or 広中) is a Japanese surname. Notable people with the surname include:
Ayaka Hironaka (born 1991), Japanese TV announcer
Heisuke Hironaka (1931–2026), Japanese mathematician
Kuniyoshi Hironaka (born 1976), Japanese martial artist
Ririka Hironaka (born 2000), Japanese track and field athlete
Wakako Hironaka (born 1934), Japanese writer and politician
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