Hieronimo \hi(e)-roni-mo, hier(o)-nimo\ as a boy's name is a variant of Geronimo (Italian, Greek) and Jerome (Greek), and the meaning of Hieronimo is "sacred name". See also Chairo.

The baby name Hieronimo sounds like Heronimo, Hieronimos and Hieronim. Other similar baby names are Jeronimo, Hieronymos and Hieronimus.