Mentor \m(e)-ntor, men-tor\ as a boy's name is of Greek origin, and the meaning of Mentor is "wise and trusted guide". Greek mythology: Mentor was a friend of Odysseus in the "Odyssey", and his son's tutor.
Baby names that sound like Mentor are Montaro and Montrel. Other similar baby names are Menor, Manton, Minor, Mynor and Meinor.