Alfredo del Mazo Vélez (21 August 1904 – 19 December 1975) was a Mexican politician affiliated with the Institutional Revolutionary Party.
He was the Governor of the State of Mexico from 1945 to 1951 and served as the Secretary of Hydraulic Resources during the six-year presidency of Adolfo López Mateos.
[1] His public service career began when he worked on the construction of the Don Martín Dam in Coahuila; he also occupied warehouse management positions in the National Road Commission and the National Irrigation Commission, of which he would be the head of the Administrative Department by 1940.
[1] del Mazo became a close disciple of Governor Isidro Fabela, who named him state treasurer in 1942 and secretary general of the government the next year.
He served in the federal cabinet for the entire presidency of Adolfo López Mateos after being selected to head his presidential campaign.