Naofumi Yamamoto (born August 1, 1977 in Gifu, Japan) is a Japanese professional wrestler and retired boxer. He is best known for his time working with New Japan Pro Wrestling (NJPW) and the WWE. During his time in the WWE, he competed under the ring name Yoshi Tatsu. He has challenged Christian in the past for the ECW Championship and has also challenged for the Unified Tag Team Championship with Goldust but came up short in capturing the titles.