Diego Cuesta Silva (born 23 January 1963, in Buenos Aires) is a former Argentine rugby union player. He played as a wing and as a centre. He works as a cardiologist. Cuesta Silva first played at La Salle, where he had his debut at the Nacional de Clubes, in 1983. He moved to SIC, where he would play from 1985/86 to 1997/98, becoming one of the most popular players and winning two titles of the Nacional de Clubes, in 1993 and 1994.. He also played for Unión de Rugby de Buenos Aires, winning 6 times the Campeonato Argentino, in 1983, 1985, 1987, 1991, 1993 and 1995.