Rodolf \r(o)-do-lf\ as a boy's name is a variant of Rodolfo. See for origin and meaning of Rodolf.
The baby name Rodolf sounds like Rudolf, Rudolfo and Rodolph. Other similar baby names are Adolf, Addolf, Botolf, Odolf, Rolf, Ranolf, Randolf, Rodel, Rodell and Udolf.