Evaristo Pérez de Castro y Colomera (26 October 1769, in Valladolid – 28 November 1849, in Madrid) was a Spanish politician and diplomat who served as Prime Minister of Spain from 3 February 1839 to 18 July 1840, and held other important offices such as Minister of State. He was a Hero of the Kingdom from 1834 to 1836, a senator for the province of Valladolid from 1840 to 1841, and senator for life from 1845 until his death.