governor of Puerto Rico (1969–73) and founder of the New Progressive Party.

Ferré obtained a master's degree in engineering from the Massachusetts Institute of Technology and became a wealthy industrialist. Among his major philanthropic contributions was the foundation of the Ponce Art Museum. His first political office was as representative-at-large in the Legislative Assembly from 1953 to 1957. At that time he was a member of the Statehood Republican Party. He ran unsuccessfully against Governor Luis Muñoz Marín in 1956 and 1960 and lost again to the Popular Democrats' candidate, Roberto Sánchez Vilella, in 1964. He left the Statehood Republican Party in 1967 and formed the New Progressive Party. Aided by a split in the Popular Democratic Party, Ferré was elected governor in 1968, thus ending the Popular Democrats' 20-year control of the governorship and their 28-year domination of the legislature.

As governor Ferré increased workers' wages and benefits and began development projects in the southwest region of Puerto Rico that included the construction of roads, beaches, and an airport. He also undertook programs to modernize agriculture. Ferré was defeated in his bid for a second term by the Popular Democrat Rafael Hernández Colón, whose party also recovered control of the legislature. From 1977 to 1980 he was president of the Puerto Rican Senate. A vocal supporter of Puerto Rican statehood, Ferré remained influential in the island's politics until his death.