Club Social Deportivo Cultural Unión Santo Domingo (better known as Los Purtus) is a Peruvian football club, playing in the city of Chachapoyas, Amazonas, Peru.

The Club Cultural Union Santo Domingo was founded on February 10, 1979.

[1] In 2009 Copa Perú, the club qualified to the Regional Stage, but was eliminated by Defensor San José in the Group Stage.

[3] In 2016 Copa Perú, the club qualified to the National Stage, but was eliminated by San José de Agua Blanca in the Repechage.

[4] In 2017 Copa Perú, the club qualified to the National Stage, but was eliminated when it finished in 32nd place.