"Blend of Gianni and Luca"
The name Gianluca is commonly a male name from the "Italian" origin.
Gianluca is an Italian compound given name built from Gianni, the Italian form of Giovanni, and Luca, the Italian form of Luke. The first element is a common Italian short form of Giovanni, and the same two-part pattern appears in other Italian names such as Gianmarco and Gianfranco. It is a single given name in Italian usage, not a hyphenated double name.
The pronunciation of Gianluca is jahn-LOO-kah.