José Joaquín Antonio Trejos Fernández (18 April 1916 – 10 February 2010) was 35th President of Costa Rica from 1966 to 1970.
His parents were Juan Trejos Quirós and Emilia Fernández Aguilar.
As a student he obtained degrees in mathematics and economics from the University of Costa Rica.
During Mario Echandi's administration he was part of Costa Rica's delegation in the United Nations.
Trejos defeated Daniel Oduber in the election that secured him the presidency.
Trejos died on 10 February 2010.