Club Deportivo Mariano Santos Mateo (sometimes referred as Mariano Santos) is a Peruvian football club, playing in the city of Tingo María, Huánuco, Peru.

The Club Deportivo Mariano Santos was founded on April 11, 1987.

[1] In 1993 Copa Perú, the club qualified to the Final Stage, but was eliminated when it finished in 3rd place.

[2][3] In 2015 Copa Perú, the club qualified to the National Stage, but was eliminated when it finished in 46th place.

[4] In 2016 Copa Perú, the club qualified to the National Stage, but was eliminated when it finished in 38th place.