Rinaldo degli Albizzi (1370–1442) was an Italian nobleman, a member of the Florentine family of the Albizzi. Along with Palla Strozzi, he was the primary opponent of Cosimo de' Medici's rise in Florence. On his father's death in 1417, Albizzi became the unofficial second-in-command of the oligarchy under his father's longtime friend, Niccolo da Uzzano. He eventually assumed leadership when Uzzano died in 1431. Albizzi died at Ancona in 1442 after a trip to Jerusalem.