It is the Italian form of the name John.
Giovanni is how the given name John is pronounced in Italian.
Giovanni Roselli's birth name is Giovanni Roselli.
Giovanni Cianfriglia's birth name is Cianfriglia, Giovanni.
Giovanni Pacialeo's birth name is Giovanni Pacialeo.
Giovanni Zarrella's birth name is Giovanni Zarella.
Giovanni Kemper's birth name is Giovanni Marradi.
Giovanni Carrara's birth name is Giovanni (Jimenez) Carrara.
Giovanni Capitello's birth name is Giovanni Familiare Capitello.
Giovanni Ribisi's birth name is Antonino Giovanni Ribisi.
Giovanni Pantaleo's birth name is Giovanni-Paolo Pantaleo.
Giovanni Watson's birth name is Daniel Giovanni Watson.
Mike Giovanni's birth name is Michael Giovanni Charleston.