Gracie family
Neiman is the son of Carla Gracie (daughter of Robson Gracie), and Márcio Stambowsky. Like his father, he was raised Jewish, making him "one of MMA's most notable Jews." He is a 4th generation member of the Gracie Family of Brazilian jiu-jitsu. He is billed professionally as "Neiman Gracie", using his mother's surname. His sister Deborah Gracie Stambowsky is the second female in the Gracie family to achieve the rank of black belt, behind their first-cousin Kyra Gracie.