Lucas Joas Gomes Leite (born November 3, 1982) is a Brazilian grappler. He is a multi-time world champion with first-place finishes at the Gi, Nogi, and Grapplers Quest world championships. Leite started training Brazilian Jiu-jitsu when he was 12 years old under Ryan Gracie. He earned his black belt under Leo Vieira in 2006.
Lucas is noted for having a dynamic half guard game utilizing a twisting knee-hip pressure, stating that he believes it is effective both in gi and no-gi Brazilian Jiu Jitsu. Though a natural lightweight, Leite competes frequently at heavyweight or absolute . Leite moved from Brazil to California in 2007 and opened his own jiu-jitsu academy, where he currently teaches full-time. Leite's students include UFC fighter Jessica Penne. He is a member of Checkmat BJJ Academy. Leite won the Pan American Championships in the under 94 kg division in 2015.