The surname Barzizza is of clear Lombard origin, with a strong concentration in the Milan area and its surroundings. According to E. De Felice, it is a surname formed in the Middle Ages from the place name Barzizza, documented in dialectal form as Bargìg(g)ia in the Bergamo area. This type of toponymic formation indicates that the surname originally identified people coming from that place.

Along the same lines, E. Rossoni confirms this possible derivation from the place name Barzizza (in the Bergamo area), reinforcing its geographical character. This type of surname was frequent in contexts where territorial provenance served as a distinctive element within broader communities.

However, E. Rossoni also raises an alternative, suggesting that the surname could derive from Barzio, a locality situated in the Lecco area. Taken together, the various interpretations agree in pointing to a toponymic origin, although with possible references to different nearby places within the Lombard region.