This third government of Luis Muñoz Marín followed his second reelection.

[1][2] In many ways it was a continuation of the previous government, with some changes in positions such as the Secretary of Justice,[3] Agriculture, and the same amount of supermajoritarian control[4] of the Senate of Puerto Rico and House of Representatives of Puerto Rico, while the opposition composition shifted from being led by the Puerto Rican Independence Party to the Partido Estadista Republicano, their presence bolstered by virtue of the effects of Article III, Section 7 of the Constitution of Puerto Rico (1952).

Party breakdown of cabinet members, not including the governor: The cabinet was composed of members of the PPD and two independents or technical positions (or people whose membership in a party was not clearly ascertained from any available media).

The Puerto Rican Cabinet was led by the Governor alone in this period.

The Cabinet was composed of all the Secretaries of the executive departments of the Commonwealth government, which at this time was limited to a small number of offices as delineated initially in the Constitution.