Marcelo Sánchez Sorondo is an Argentine prelate of the Catholic Church who was Chancellor of the Pontifical Academy of Sciences and the Pontifical Academy of Social Sciences from 1998 to 2022. He was made a bishop in 2001. Having authored many publications in the sciences, he received several honors, including the Légion d’Honneur of France in 2000.

The Pontifical Academy of Saint Thomas Aquinas is a pontifical academy established on 15 October 1879 by Pope Leo XIII. The academy is one of the pontifical academies housed along with the academies of science at Casina Pio IV in Vatican City, Rome.