The XII Constitutional Government of Portugal (Portuguese: XII Governo Constitucional de Portugal) was the 12th government of the Third Portuguese Republic, in office from 31 October 1991 to 28 October 1995.

It was formed by members of the Social Democratic Party (PSD) and had Aníbal Cavaco Silva, leader of the PSD, as Prime Minister.

The government was composed of the Prime Minister and 17 ministries comprising ministers, secretaries and under-secretaries of state.

The government also included the Ministers of the Republic for the Autonomous Regions of Azores and Madeira.

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