Norifumi Yamamoto

was a Japanese mixed martial artist and kickboxer. He was born in Kawasaki, Kanagawa, Japan.
Yamamoto competed in the bantamweight division of the UFC. He became popular in the Shooto organization due to his aggressive persona. He moved on to K-1 Hero's, where he became the K-1 Hero's 2005 Middleweight Grand Prix Tournament Champion in December 2005. 
On September 18, 2018, Yamamoto died of stomach cancer in Guam; he was 41 years old.