Nicolás Arnaldo Núñez Rojas, nicknamed Nico, (born 12 September 1984) is a Chilean football manager and former player who played as a midfielder.

Núñez began his career with Universidad Católica in 2001, and subsequently played for Albacete Balompié in 2006 and Everton de Viña del Mar in 2007.

He participated in the South American championships in Arequipa, Peru, alongside Mauricio Pinilla, Mark Gonzalez, Luis Jimenez and was debuted by U. Catholic in the first division, against University of Chile. In that institution, he always admitted that he stayed in good shape, even achieving goal scoring.

He had a season loan to Puerto Montt Sports, where he scored many goals and returned to the Catholic University. Then he went to the preseason Spanish club, Albacete, in which that year he was hired by loaner Everton Viña del Mar. On February 18, 2007, he played his 2nd game scoring a goal against Audax Italiano.

The Catholic University celebrated the goal by making him have a bond for the institution, it made him to remember what he wanted to return at some point.

In mid-2007, Nico was signed by C. University where he always has good relationships with the colleagues. In late 2008, he was transferred to U. Spanish, Nico is currently playing for CD Huachipato

After working as the assistant coach of both Ariel Pereyra and Fernando Vergara,^[1] in March 2021 he became the manager of Magallanes in the Primera B de Chile.^[2]

Núñez led Magallanes to the top tier in 2022 as champions, and also won the Copa Chile with the side, qualifying them to the Copa Libertadores for the second time in their history. He also won the 2023 Supercopa de Chile with the club, before resigning on 13 May of that year.^[3]

In July 2023, Núñez signed with Universidad Católica, ending his contract in March 2024, after they were knocked out by Coquimbo Unido from the Copa Sudamericana.^[4]