Anderson da Silva (born April 14, 1975) is a Brazilian Muay Thai fighter and mixed martial artist (MMA). He is a former UFC middleweight champion. He is also the current Cage Rage World middleweight champion. Silva is the longest-reigning champion in that promotion. He has competed in PRIDE Fighting Championships, Shooto, and Rumble on the Rock. Silva holds notable wins over Rich Franklin, Hayato Sakurai, Nathan Marquardt and Jeremy Horn.