Segundo Luna (born April 20, 1902 in Santiago del Estero, Argentina) was an Argentinian footballer, born in Santiago del Estero, Argentina. He was the first Santiagueño (person who was born in Santiago del Estero) to play in Argentina's national football team as well as the first to play in an international tournament. Luna's team finished second in the Athletic Club Students Cultural Football League. He then joined the international football team in 1927, the year before the Olympics in Amsterdam. His first tournament was the 1927 South American Championship, in Lima, Peru, where Argentina qualified for the 1928 Olympics. The name 'Segundo Luna' means 'Second Moon' in Spanish.