Ferrand Martinez (fl. 14th century) was a Spanish cleric and archdeacon of Écija, most noted for being an antisemitic agitator whom historians cite as the prime mover behind the series of pogroms against the Spanish Jews in 1391, beginning in the city of Seville. Martínez was imprisoned again by royal order in 1395, and although he was quickly released, he died soon after, leaving his fortune to a hospital he had founded in San María.