Carlos Enrique Díaz Sáenz Valiente (25 January 1917 – 14 February 1956) was an Argentine sport shooter. He was born in Mar del Plata, Argentina. He won the silver medal in 25 metre rapid fire pistol at the 1948 Summer Olympics in London. He competed at the 1952 Summer Olympics in Helsinki, where he placed fourth. Valiente also won the World Championship in 1947.