Gustave \g(u)-sta-ve, gus-tave\ as a boy's name is pronounced GOO-stahv. It is of Scandinavian origin, and the meaning of Gustave is "royal staff; staff of the gods". A royal name in Sweden. Gustavo is a Spanish form; Gustav is German. Composer Gustav Mahler; writer Gustave Flaubert.

Gustave has 16 variant forms: Gus, Guss, Gussie, Gustaaf, Gustaf, Gustaff, Gustaof, Gustav, Gustave, Gustavo, Gustavus, Gustaw, Gustovo, Gustus, Gusztav and Tavin.