Masato (March 10, 1979-) is a Japanese kickboxer and K-1 MAX World Grand Prix champion. He was born in Chiba, Japan.

His real name is Masato Kobayashi. Masato's technically sound style contributes to most of his K-1 victories. Utilizing withering straight right hands along with stinging low kicks, he is often able to overwhelm his opponents with his methodical offense. He is somewhat of a teen idol in Japan; many young ladies often attend K-1 events just to watch him fight. He has appeared in films such as IZO, Buyuden, Dead or Alive 2, and Shukyoku Ninja.

Career

• All Japan Kickboxing Federation Welterweight champion
• I.S.K.A. World Oriental Welterweight champion
• 2002 K-1 World Max Japan Champion
• 2002 K-1 World Max Third Place
• 2003 K-1 World Max Japan Champion
• 2003 K-1 World Max Champion
• 2004 K-1 World Max Finalist

Masato's latest fight was a loss by decision to Andy Souwer during the K-1 MAX 2006 World Grand Prix Semi-Finals, 6/30/2006. The tournament was won by Buakaw Por.Pramuk who defeated Andy Souwer with a second round K.O.