Giovanni Nanni, also known as Giovanni de' Ricamatori, and best known as Giovanni da Udine (1487–1564), was an Italian painter and architect born in Udine. As a student and assistant of Raphael, he was responsible for most of the "decorative" elements of the major Raphaellesque projects in Rome, and he was a specialist in fresco and stucco grotesque decorations. These included the stucco work in the Loggia di Raffaello (Vatican, 1517–1519) and the heavy fruit-laden wreaths in the loggia di psiche in the Villa Farnesina.