Mariano Suárez Veintimilla (8 June 1897 – 23 October 1980) was an Ecuadorian politician. He served as Velasco's Vice President from 1946 until he was ousted in 1947 by Carlos Mancheno Cajas. Soon Mancheno was ousted and Suárez served briefly as President of Ecuador from 2 September 1947 to 16 September 1947.