Wakui (written: 涌井 or 和久井) is a Japanese surname. Notable people with the surname include:
Emi Wakui (和久井 映見; born 1970), Japanese actress
Hideaki Wakui (涌井 秀章; born 1986), Japanese baseball player
Hidetoshi Wakui (和久井 秀俊; born 1983), Japanese footballer
Norio Wakui (涌井 紀夫; 1942–2009), Japanese judge
Yū Wakui (和久井 優; born 1995), Japanese voice actor
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