The Argentine Patriotic League (Spanish: Liga Patriótica Argentina) was a Nacionalista paramilitary group, officially created in Buenos Aires on January 16, 1919, during the Tragic Week.

Presided over by Manuel Carlés, a professor at the Military College and the Escuela Superior de Guerra, it also counted among its members the deputy Santiago G. O'Farrell (1861–1926).

[3] The League worked hand-in-hand with the Bonaerense police forces in the repression of social movements.

[3] The League counted with the official support of the admiral and Minister of Marine Manuel Domecq García.

It also participated to José Félix Uriburu's 1930 military coup, which initiated the Infamous Decade.