Tatsuya Kawajiri (, born May 8, 1978) is a Japanese mixed martial artist currently signed to the Ultimate Fighting Championships competing in the Featherweight division. He is a former Shooto Lightweight Champion, and has also competed in PRIDE, DREAM, Strikeforce, ONE FC. Kawajiri also participated in the Yarennoka! event as well as Dynamite!! 2009 and Dynamite!! 2010, representing DREAM in both events.