The Infante Juan of Spain, Count of Barcelona (Juan Carlos Teresa Silvestre Alfonso de Borbón y Battenberg; English: John Charles Therese Sylvester Alphonse of Bourbon and Battenberg) (20 June 1913 – 1 April 1993), was the third surviving son and designated heir of King Alfonso XIII of Spain and Victoria Eugenie of Battenberg, the monarch replaced by the Second Spanish Republic, and father of King Juan Carlos I, under whom a constitutional monarchy was restored. As King, he would have been Juan III of Spain.