Benício has a son named Antônio with actress Alessandra Negrini and a son named Pietro with actress Giovanna Antonelli. As a teenager he liked to surf with friends on the beaches of Rio and Niterói, but stopped after starting work as an actor.
He is quoted as saying that Charlie Chaplin inspired him as a young boy to be an actor. He stated that as a youth he liked to smoke marijuana with all of his friends and never saw anything wrong with that, despite having stopped to become an actor.
In the same year, they separated because of irreconcilable differences.
In October, 2012, Benício, during a talk show, said he was in a relationship with actress Débora Falabella.
He started smoking cigarettes at age 26 and after more than 10 years of smoking, he quit the habit.