Leopoldo Fortunato Galtieri Castelli was an Argentine general who served as President of Argentina from December 1981 to June 1982. Galtieri exercised his control over Argentina as a military ruler during the National Reorganization Process as leader of the Third Junta with Jorge Anaya and Basilio Lami Dozo.

The president of Argentina is both head of state and head of government of Argentina. Under the national constitution, the president is also the chief executive of the federal government and commander-in-chief of the armed forces.