People educated at Colegio Cardenal Newman

Mauricio Macri (born 8 February 1959) is an Argentine businessman and politician who served as President of Argentina from 2015 to 2019. A former civil engineer, Macri won the first presidential runoff ballotage in Argentina's history (the runoff system had been introduced in 1994) and is the first democratically-elected non-Radical or Peronist president since 1916. He previously served as the chief of government of Buenos Aires from 2007 to 2015, and represented the city in the lower house of the Congress of Argentina from 2005 to 2007.

Felipe Contepomi (born 20 August 1977) is an Argentine rugby coach who is currently the backs coach at Leinster Rugby. He was a rugby union footballer who played fly-half or centre; his last club was Club Newman, in the first division of the URBA championship. He was also a key player for Argentina, having played 15 years for the national team. His twin brother Manuel was also a Puma. In June 2015 he was appointed coach of Argentina XV. Contepomi was inducted into the World Rugby Hall of Fame in November 2017.

Alfonso Prat-Gay (born November 24, 1965) is an Argentine economist and politician. Following the election of Mauricio Macri to the presidency on 2015, he became Minister of Economy of Argentina.

Manuel Contepomi (born 20 August 1977 in Buenos Aires) is an Argentine rugby union footballer. He started playing Rugby at his secondary school, Colegio Cardenal Newman, and currently plays for Club Newman in the Unión de Rugby de Buenos Aires competition. He has also made numerous appearances for the Argentina national team. He is the twin brother of fellow Argentine rugby international Felipe Contepomi.

Luis Andrés Caputo (born 21 April 1965) is an Argentine economist who was Minister of Public Finances and President of the Central Bank of Argentina.

Julián Montoya (born Buenos Aires, 29 October 1993) is an Argentine rugby union player. He plays as a hooker.

Agustín Gosio (born March 17, 1983) is an Argentine rugby union footballer. He plays in the wing and centre position. Gosio started playing rugby for his secondary school, Colegio Cardenal Newman, moving afterwards for Club Newman. He was part of Pampas XV squad during 2010 and 2011 Vodacom Cup editions. In May 2010 he was selected in a squad of over 40 players to represent Argentina during Scotland's two test Summer tour of Argentina. He previously represented Argentina in 7's rugby. He was called for the 2011 Rugby World Cup.

Francisco de Narváez Steuer (born 22 September 1953 in Bogotá), known as El Colorado or Pancho, is a Colombian-born naturalized Argentine businessman, politician who ran for governor of Buenos Aires Province on the Unión PRO ballot in the 2007 elections in Argentina. He was a member of the Argentine Chamber of Deputies until late 2015.

Carlos J. Miguens Bemberg (born 16 February 1949), is an Argentine businessman and descendant of the wealthy Bemberg family of immigrants to Argentina.

Marcos Ayerza (born January 12, 1983 in Buenos Aires) is a former Argentine rugby union rugby player who played loose-head prop for the Leicester Tigers and his national team. His passion and aggression on the field earned him the nickname "El Toro" (The Bull).