Iwai (written: 岩井 lit. "rock well" or 岩居) is a Japanese surname. Notable people with the surname include:
- Akira Iwai (岩井 章, 1922–1997), Japanese trade union leader
- Atsuhiro Iwai (岩井 厚裕, born 1967), Japanese footballer
- Fumio Iwai (岩井 文男, born 1960), Japanese politician
- Fumito Iwai (岩井 郁人, born 1990), Japanese musician
- Iwai Hanshirō I (1652–1699), Japanese kabuki artist
- Iwai Hanshirō V (1776–1847), Japanese kabuki artist
- Iwai Hanshirō VIII (1829–1882), Japanese kabuki artist
- Katsuhito Iwai (岩井 克人, born 1947), Japanese economist
- Masaki Iwai (岩井 真幸, born 1985), Japanese curler
- Shigeki Iwai (岩井 茂樹, born 1968), Japanese politician
- Shunji Iwai (岩井 俊二, born 1963), Japanese film director
- Shuya Iwai (岩井 柊弥, born 2000), Japanese footballer
- Toshio Iwai (岩井 俊雄, born 1962), Japanese artist
- Yukiko Iwai (voice actress) (岩居 由希子, born 1972), Japanese voice actress
- Yukiko Iwai (Onyanko Club) (岩井 由紀子, born 1968), Japanese pop singer
This page lists people with the surname Iwai.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.