The Ministry of Justice[2] (Spanish: Ministerio de Justicia; MJ) of Argentina is a ministry of the national executive power tasked with enforcing of the law and administration of justice.

The ministry was created in 1949, during the first presidency of Juan Domingo Perón, and has been consistently present in every presidential cabinet since then.

The incumbent minister is Mariano Cúneo Libarona, who has served since 10 December 2023 in the cabinet of Javier Milei.

The Ministry of Justice has a number of centralized dependencies reporting to it.

The centralized dependencies, as in other government ministers, are known as secretariats (secretarías) and undersecretariats (subsecretarías); there are currently four of these:[3][4] In addition, the National Institute Against Discrimination, Xenophobia and Racism (INADI), the Office of the General Notary of the Government of the Nation, the Procuratorship of the Treasure of the Nation, the International Centre for the Promotion of Human Rights (CIPDH), the University Institute of the Mothers of Plaza de Mayo (IUNMA) and Argentina's federal prison system all depend on the Ministry of Justice.