Jeferson Guaresi is a Brazilian jiu-jitsu black belt under Cicero Costha and Murilo Santana, who is one of the main representatives of the PSLPB and Unity Jiu-Jitsu Academies in the sport's international circuit. Guaresi made his name while competing in a variety of grappling tournaments and rulesets, though is notorious for his achievements in the International Brazilian Jiu-Jitsu Federation (IBJJF) circuit.