The president of Czechoslovakia (Czech: prezident Československa, Slovak: prezident Česko-Slovenska) was the head of state of Czechoslovakia, from the creation of the First Czechoslovak Republic in 1918 until the dissolution of the Czech and Slovak Federative Republic on 1 January 1993.

In periods when the presidency was vacant, most presidential duties were assumed by the prime minister.

After the 1948 coup d'état, the KSČ's leader was the country's de facto chief executive.

However, three party leaders (Klement Gottwald, Antonín Novotný, and Gustáv Husák) also served as president at some point in their tenures.

Except for the final office-holder, the leader of the KSČ was de facto the most powerful person in the country during this period.