José Bruno Carranza Ramírez (October 5, 1822 – January 25, 1891) was briefly President of Costa Rica (albeit with the title Temporary Head of the Republic) in 1870.

He served in Nicaragua as a military doctor during the 1856 Campaign against William Walker, but had to return almost immediately due to a Costa Rican Army retreat and a cholera epidemic.

The principal figure in his administration and author of his policies towards external relations and freedom of creed was the Guatemalan lawyer Lorenzo Montúfar y Rivera, noted advocated of anti-clericalism.

Other notable Secretaries of State during his time in office were Joaquín Lizano Gutiérrez (government, police, justice, agriculture, and industry), Rafael Gallegos Sáenz (housing and commerce), and Buenaventura Carazo Alvarado (war, navy, and public works).

He was later a member of the Grand National Counsel and Plenipotentiary Minister of Costa Rica in El Salvador, where he signed the Carranza-Arbizú Accord.