Kazuo Yamazaki (山崎一夫, Yamazaki Kazuo, born August 15, 1962) is a Japanese retired professional wrestler, wrestling instructor and commentator who is known for his work in New Japan Pro-Wrestling (NJPW), and shoot-style promotions Universal Wrestling Federation (UWF) and UWF International (UWFi).

An amateur wrestler and high school judoka in his youth, Yamazaki's professional wrestling career began in May 1982 in New Japan Pro-Wrestling.

During this time, he was also a student of Satoru Sayama, better known as Tiger Mask, who trained Yamazaki extensively in shoot wrestling and kickboxing.

In 1984, Yamazaki joined the shoot style promotion Japanese UWF, an early precursor to modern mixed martial arts.

In 1998, he participated in the G1 Climax tournament, defeating Tatsumi Fujinami, Kensuke Sasaki, and Masahiro Chono, before losing to Shinya Hashimoto in the finals.