Ferland Sinna Mendy (born 8 June 1995) is a French professional footballer who plays as a left back for Real Madrid and the France national team.
During the 2016–17 Ligue 2 season, Mendy made 35 appearances for Le Havre.
Mendy signed for Ligue 1 club Lyon on 29 June 2017 on a five-year contract. The transfer fee paid to Le Havre was reported as €5 million plus a possible €1 million in bonuses. On 19 September 2018, he made his Champions League debut in a 2–1 away win over Manchester City in the 2018–19 season.
On 12 June 2019, Mendy signed for La Liga club Real Madrid on a six-year contract for an initial fee of €48 million, potentially rising to €53 million with add-ons. He made his debut on 1 September 2019, starting in a 2–2 draw at Villarreal. His first goal came on 13 July 2020, in a 2–1 victory over Granada. During the league season he managed to appear in 25 matches, as Real Madrid won the 2019–20 La Liga. On 24 February 2021, he scored his first Champions League goal in a 1–0 away win over Atalanta in the 2020–21 UEFA Champions League round of 16.