Aloisio Gritti (d. 1534) was a son of Andrea Gritti, the Doge of Venice. His mother was Greek, and he was born in Istanbul while his father was bailo there. Educated in Italy, he returned to his native city and pursued a career there. A favorite of Pargalı Ibrahim Pasha, he had a significant role in Ottoman foreign relations while the latter was Grand Vizier. Starting in 1532, he tried to impose his rule on Hungary, Transylvania and, through his sons, Moldavia and Wallachia. Sent by the sultan with troops into Transylvania, he was besieged in the Mediaș citadel by a joint force loyal to Ștefan Mailat and Peter IV Rareș before being killed.