The Battle of Nájera, also known as the Battle of Navarrete, was fought on 3 April 1367 between an Anglo-Gascon army and Franco-Castilian forces near Nájera, in the province of La Rioja, Castile. The English were led by Edward, the Black Prince, and John of Gaunt, Duke of Lancaster, allied with Peter of Castile (sometimes called "Peter the Cruel") against his brother Henry of Trastámara (Spanish: Enrique II).