Octavio Antonio Beras Rojas (16 November 1906 – 1 December 1990) was a Dominican cardinal of the Roman Catholic Church.

Octavio Beras Rojas was born in Santa Lucía, in El Seibo Province, as the eldest of the three children of Octavio Beras Zorrilla, congressman and governor of El Seibo, and Teresa Rojas Santana (a great-granddaughter of Ramón Santana).

He received his first Communion from Archbishop Adolfo Alejandro Nouel, and studied at the Seminary of St. Thomas Aquinas, in Santo Domingo from 1923 to 1926.

He later succeeded the late Ricardo Pittini Piussi, SDB, as Archbishop of Santo Domingo, and thus Primate of the Dominican Republic, on 10 December 1961.

Beras was appointed Military Vicar for the Dominican Republic on 8 December 1962, and was a member of the Central Preparatory Commission of the Second Vatican Council from 1962 to 1965.