Kiichi Nakai (中井 貴一, Nakai Kiichi, born 18 September 1961) is a Japanese actor. His name was given by Yasujirō Ozu. His father, Keiji Sada, also a movie actor, died when Nakai was only two years old. Nakai started his acting career while he was still in university and was awarded the Rookie of the Year at the Japan Academy Awards in 1981.
In 2003 he played a Japanese delegate to a Chinese emperor of the Tang dynasty in Warriors of Heaven and Earth. Though a few of his lines are in Japanese, most are in Mandarin.