Modesto López Otero (24 February 1883 – 23 December 1962) was a Spanish architect.
He taught for many years in the Superior Technical School of Architecture of Madrid.
He directed construction of the Madrid University City, much of which was damaged during the Spanish Civil War (1936–39).
He designed many houses, office buildings, monuments and churches.
The Arco de la Victoria (1956) celebrates the victory of the Nationalist forces led by General Francisco Franco over the Republicans.