Nicolás Fonseca (born 19 October 1998) is a professional footballer who plays as a midfielder for Liga MX club León and the Uruguay national team.

[1] Before the second half of 2021–22, Fonseca signed for Uruguayan side River Plate (Montevideo).

[3] Fonseca received his first call-up to the Uruguay national team in March 2024 for friendlies against Basque Country and Ivory Coast.

[4] He made his debut on 23 March in a 1–1 draw against Basque Country.

[5] Nicolás is the son of former Uruguay international Daniel Fonseca.