Luis Fernando Díaz Marulanda (born 13 January 1997) is a Colombian professional footballer who plays as a winger for Premier League club Liverpool and the Colombia national team.
Díaz began his professional career in the Categoría Primera B at Barranquilla, before moving to Atlético Junior, winning Categoría Primera A, one Copa Colombia and one Superliga Colombiana. In 2019, he joined Porto for a reported fee of €7 million, winning two Primeira Liga titles, one Taça de Portugal, and one Supertaça Cândido de Oliveira. After 14 league goals in 18 league games in the first half of 2021–22, Liverpool signed him in a transfer worth €45 million (£37.5 million). He won the EFL Cup and FA Cup in his first season, and was man of the match in the latter final.
Díaz made his senior international debut for Colombia in 2018. He has earned over 30 caps for his national team, helping them to a third-place finish at the 2021 Copa América, and being awarded the Golden Boot.