Dom Pedro Álvares Pereira (Portuguese pronunciation: [ˈpedɾu ˈaɫvɐɾ(i)ʃ pɐˈɾejɾɐ]; 13?? – 14 August 1385) was a Portuguese noble of the 14th century. He was the son of Marinha Domingues and Álvaro Gonçalves Pereira, to whom he succeed after his death as patriarch of the Pereira family and as Prior of Crato (leader of the Knights Hospitaller in Portugal). He was the older brother of the Constable of Portugal, Dom Nuno Álvares Pereira.