Luis Fernando Díaz Marulanda (born 13 January 1997) is a Colombian professional footballer who plays as a winger for Portuguese club Porto.
He began his career with Atlético Junior, making 108 appearances and scoring 21 goals.
In 2019, he signed for Porto for €7 million.
Díaz made his senior international debut for Colombia in 2018, and was part of their squad at the 2019 Copa América.