Nicolás Tagliafico

Banfield

Tagliafico made his professional debut for Banfield on a 2−1 away victory against Tigre for the fifth fixture of the 2011 Clausura, coming on as a substitute on the 72nd minute. Due to Marcelo Bustamante's ban, he was a starter the following game, a 2−2 draw with Huracán. In 2012, Tagliafico signed a one-year loan deal with Spanish club Real Murcia.

Independiente

In 2015, he made the move to Independiente for an undisclosed transfer fee and made his professional debut for the club during a 3−2 away win at Newell's Old Boys. Tagliafico would end up captaining the team that won the 2017 Copa Sudamericana.

Ajax

On 5 January 2018, Tagliafico moved to Eredivisie club Ajax for an estimated transfer fee of £4 million. He made his professional debut for the club on 21 January 2018 in a 2−0 home victory against rivals Feyenoord in the Klassieker. Under manager Erik ten Hag, he established himself as the team's primary left-back due to his defensive tenacity and tactical discipline. He scored his first goal for the club on 11 March 2018 in a 4–1 league victory over SC Heerenveen. During the 2018–19 season, Tagliafico was an integral component of the Ajax squad that achieved a domestic double and reached the semi-finals of the UEFA Champions League. He made his debut in the UEFA Champions League group stage on 19 September 2018, scoring a brace in a 3–0 home victory over AEK Athens. He also scored a late equalising goal in a 3–3 draw against Bayern…

Tagliafico has played in all the youth categories of the Argentina national team: under-15, under-17 and under-20. Tagliafico impressed for the Argentina national under-20 football team at the 2011 FIFA U-20 World Cup in Colombia; however, he missed Argentina's final kick in the quarter-final penalty shoot-out against Portugal, meaning Argentina exited that competition 5–4 on penalties (Cartagena, 13 August 2011). In May 2018, he was named in Argentina's final 23 man squad for the 2018 World Cup in Russia. He also played the 2019 Copa América, and took with Argentina the third place, through a 2–1 victory over Chile in the third-place match. In June 2021, he was included in Lionel Scaloni's final Argentina 28-man squad for the 2021 Copa América. In November 2022, he was named in Argentina's final 26-man squad for the 2022 FIFA World Cup in Qatar by Scaloni. Tagliafico was part of the starting line-up in the final against France, where Argentina won the World Cup by a score of 4–2 on penalties. In June 2024, Tagliafico was included in Lionel Scaloni's final 26-man Argentina squad for the 2024 Copa América. On 27 May 2026, Tagliafico was selected in the 26-man squad for the 2026 FIFA World Cup.

Tagliafico is noted for his "lung-busting stamina, excellent technique, and continuous enterprise". As a result of his skills, as well as his playing position and nationality, and striking visual resemblance, he has been compared to the Inter Milan and Argentina full-back Javier Zanetti, formerly also of Banfield.

Tagliafico was born in on 31 August 1992 in Rafael Calzada, a local city in Buenos Aires Province,. Tagliafico is of Italian descent. His paternal grandparents are from the city of Genoa, whereas his maternal family are of Calabrian origin; he also has Italian citizenship. Several ancestors of Tagliafico immigrated and settled across Argentina, primarily in Buenos Aires and Córdoba, and Uruguay.