Gian Francesco de Majo (1700-1770) was an Italian composer and opera librettist, prominent in the 18th century. He was born in Naples and is best known for his contributions to the Neapolitan opera scene, a leading genre of the time. De Majo's works often showcased the characteristics of the emerging opera buffa, blending humor with musical innovation. Notable works include his operas "Il re pastore," "La clemenza di Tito," and "L'eroe cinese." His compositions also featured a significant use of the orchestra, which influenced the orchestral practices of his contemporaries. De Majo's operas were performed in various Italian theaters, and he collaborated with various librettists, contributing to the rich tapestry of Italian operatic literature. His impact on music lies in his role in the development of the comic opera genre and his influence on later composers, including those of the Classical period. De Majo's works reflect the transition from Baroque to Classical styles, and he is remembered as a key figure in the evolution of opera in Naples during the 18th century.