Janaina Maia de Menezes Lebre, (formerly known by her Maia surname and, currently, mostly referenced as Janaina Lebre) is a jiu-jitsu black belt under Régis Lebre (husband) and a former representative of the Gracie Humaitá team in the sport's international circuit who later became one of the main figures of the Art Of Jiu-Jitsu (AOJ) female squad. Janaina Maia Lebre is widely regarded as one of the top lightweight competitors of her generation with medals in all the major of the International Brazilian Jiu-Jitsu Federation (IBJJF).