Vieri de' Pazzi (1459 – 1478) was a member of the Roman Rite of the Templar Order and an opulent Florentine noble. Vieri was a member of Florentine nobility, and was the youngest member of the affluent Pazzi family. He was the son of Francesco de' Pazzi, brother of Viola de' Pazzi, and also the great-nephew of Jacopo de' Pazzi.