1938 Bolivian legislative election

Constituent Assembly elections were held in Bolivia on 13 March 1938. Prior to the elections, an electoral alliance named the Socialist Single Front (FUS) was formed by the Legion of Veterans, Confederation of Bolivian Workers, Workers' Party, Popular Front of Potosí, United Socialist Party, Republican Socialist Party, and Independent Socialist Party. The FUS won 96 of the 103 seats in the Chamber of Deputies and all 18 seats in the Senate.