Santiago Polanco-Abreu (October 30, 1920 – January 18, 1988) was the 10th Resident Commissioner of Puerto Rico.

[1][2] He was admitted to the bar in 1943 and practiced law in Isabela and San Juan.

He was one of the founders of the Institute for Democratic Studies in San José, Costa Rica.

Polanco-Abreu was elected as a Popular Democrat to be Resident Commissioner of Puerto Rico to the United States Congress, November 3, 1964, for the term ending January 3, 1969.

This article incorporates public domain material from the Biographical Directory of the United States Congress