Antonio Ricardo Jardim Libório (born July 13, 1967) is a Brazilian jiu jitsu black belt under Grand Master Carlson Gracie. He is the co-founder of American Top Team (ATT) and Brazilian Top Team (BTT), the founder and CEO of Martial Arts Nation and the International Brazilian Jiu-Jitsu Institute (IBJJI), and also a professor of BJJ at the University of Central Florida (UCF). According to Fight! magazine's most recent "Power 20", which profiles the twenty "most significant power players, movers, shakers, ambassadors, and game-changers in MMA," Libório is currently ranked #13.