Jules Olivier Koundé is a French professional footballer who plays as a defender for the Spanish La Liga club Sevilla FC.
Koundé started in his first-team debut for Bordeaux in the 2–1 Coupe de France away loss to US Granville in the round of 64 on 7 January 2018, playing the full 90 minutes of normal time and the full 30 minutes of extra time. He started in his Ligue 1 debut for Bordeaux in a 1–0 away win over Troyes on 13 January 2018. On 10 February 2018, Koundé scored the opening goal of a 3–2 Ligue 1 home win over Amiens; it was his first career Ligue 1 goal and his first competitive goal for Bordeaux's first team.
On 3 July 2019, he signed for the Spanish club Sevilla FC in La Liga. The transfer fee paid to Bordeaux was reported as €25 million.