The Convention on the Exercise of Liberal Professions of 1939 (Spanish: Convención sobre el Ejercicio de Profesiones Liberales de 1939) is a treaty signed in the Second South American Congress of Private International Law of 1939 and 1940 in Montevideo, by which allows holders of an academic degree obtained in a public education institution of a state party to validate their degrees in another state party provided that the degree keeps a reasonable equivalence with the corresponding one in the second state.

This treaty updates the provisions of the Convention on the Exercise of Liberal Professions of 1889, and binds Argentina, Paraguay and Uruguay.

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