Tomás de Torrejón y Velasco Sánchez (23 December 1644 – 23 April 1728) was a Spanish composer, musician and organist based in Peru, associated with the American Baroque.
In 1658, while still in Spain, he entered into the service of Pedro Fernández de Castro y Andrade, Count of Lemos, who later became the viceroy of Peru.
Torrejón seems to have been deeply religious, and adhered to the precepts of the Catholic Church as usual at the times for someone in his position.
Throughout his career as a composer he received wide acclaim; his villancicos were known as far away as Guatemala, and at both Trujillo and Cuzco his opinions were solicited before crucial musical decisions were taken.
A second organ was installed in the Lima Cathedral in 1680 and Torrejón y Velasco composed polychoral villancicos for the inauguration ceremony.