María Dolores "Mary" Tarrero-Serrano de Prio (5 October 1924 – 24 September 2010) was a Cuban politician who was the First Lady of Cuba from 1948 to 1952.

Her father, Gerardo Terrero, was the mill's accountant and her mother was Elvira Serrano.

In 1956, after Batista granted an "amnesty", they returned for a short time until they were forced into exile again at gunpoint.

Her husband, the last constitutionally elected president of Cuba, committed suicide in 1977 and she died in 2010 of pneumonia.

She and her husband, Carlos, are buried at Caballero Rivero Woodlawn North Park Cemetery and Mausoleum in Miami, Florida.