Pedro Afonso, Count of Barcelos (before 1289 – May 1350), was an illegitimate son of King Denis of Portugal and Grácia Frois. He was made the 3rd Count of Barcelos on 1 May 1314. Following his "retirement" to the civil parish of Lalim, Pedro Afonso was credited with a group of literary works on various themes, including the Crónica Geral de Espanha (1344) and the Livro de Linhagens, in addition to the Livro das Cantigas.