Anssumane “Ansu” Fati Vieira (born 31 October 2002) is a professional footballer who plays as a forward or winger for Ligue 1 club Monaco, on loan from La Liga club Barcelona.

A graduate of Barcelona’s famed La Masia academy having joined in 2012 he made his first‑team debut in August 2019 at age 16, becoming the club’s second‑youngest La Liga debutant and scoring soon after. Fati quickly earned global attention but his progression was hampered by a series of serious injuries. Despite playing a role in Barcelona’s domestic treble in 2024–25, he featured sparingly under coach Hansi Flick and spent much of the campaign sidelined. In summer 2025, he signed a 2025–26 loan deal to Monaco, which includes an option to buy.