Franz Xaver Wolfgang Mozart (July 26, 1791 – July 29, 1844), also known as Wolfgang Amadeus Mozart, Jr., is the youngest child of six born to Wolfgang Amadeus Mozart and his wife Constanze.

He is the younger of his parents' two surviving children.

He is a composer, pianist, conductor, and teacher from the late classical period whose musical style was of an early Romanticism, heavily influenced by his father's mature style.