The Minor Basilica of Our Lady of Luján (Spanish: Basílica Menor de Nuestra Señora de Luján) is a Catholic church in Luján, Buenos Aires, Argentina.

Built in Neogothic style between 1890 and 1935, it is dedicated to Our Lady of Luján, the patron saint of Argentina.

It is part of the Archdiocese of Mercedes-Luján, whose seat is located at the Cathedral Basilica of Mercedes-Luján in the neighboring city of Mercedes.

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