Worldwide, Σφακιανάκης (Σφακιανάκης ) is an extremely rare unknown gender first name. Much more prevalently, Σφακιανάκης is the last name as well as the forename.
Sfakianakis
Κώστας, Νίκος, Μιχάλης, Βίκτωρας, and Γιάννης