Eduardo Gorostiaga Alcoreza (born 22 May 1945) is a Bolivian former professional tennis player. Born in La Paz, Gorostiaga goes by his nickname "Pacho" and is the son of national champion Issac, who was later an influential tennis administrator. Gorostiaga, who competed on the international tour in the 1960s and 1970s, was along with his sometimes doubles teammate Ramiro Benavides one of the two pre-eminent Bolivian players of this era. Despite this he only appeared in one Davis Cup tie for Bolivia, against Brazil in São Paulo in the 1975 tournament.