Andrea da Firenze (also known as Andreas da Florentia, Andrea de' Servi, Andrea degli Organi, Andrea di Giovanni, and Horghanista de Florentia; died 1415) was a Florentine composer and organist of the late medieval era. Along with Francesco Landini and Paolo da Firenze, he was a leading representative of the Italian ars nova style of the Trecento, and was a prolific composer of secular songs, principally ballate.
Since Andrea was a member of the Servite religious order, whose records have largely survived intact, more is known about his life than is usually the case for fourteenth-century composers. He entered the order in 1375, though at what age is not known. One of his first activities within the order was to carry out a commission to build an organ for the Servite house in Florence, for which he hired Francesco Landini as a consultant. Among the surviving records are the receipts for the wine that the two consumed during the three days it took to tune the instrument.