Carlos Alberto Lacoste (2 February 1929 – 24 June 2004) was an Argentine Navy vice-admiral and politician who briefly served as interim President of Argentina.

While serving as a vice-admiral in the Navy, Lacoste was influential in the organization of the 1978 FIFA World Cup, hosted by Argentina.

[1] In December 1981 the then head of state General Roberto Viola was ousted in a coup d'état.

Lacoste served as interim President of Argentina from 11 to 22 December 1981, during a period of military rule.

After the military government, he preserved his connections with football associations, becoming a South American representative in FIFA, and in 1986 he was assigned as Argentine supervisor in the drawing of that year's World Cup matches in Mexico, which was eventually won by Argentina.