Masao Hattori (服部正男, Hattori Masao, born July 20, 1945), known as Tiger Hattori (タイガー服部, Tāiga Hattori) is a Japanese retired professional wrestler, referee and manager best known for his work as a referee in New Japan Pro-Wrestling (NJPW). Hattori is the current foreign liaison officer of NJPW.