Can you consider yourself Italian if you are only part Italian?

Yes, you may consider yourself Italian even if you're only part Italian. You particularly may consider yourself so if you know and like the culture, the dances, the food, the history, the language, the literature, and the music of the Italian peninsula and islands. And sometimes your unofficial self image may be backed up by some official recognition of your Italian-ness. For example, it validates one's self image of oneself as an Italian if that perception is supported by the official status, as one of Italy's citizens or residents.