Fabien Causeur (born 16 June 1987) is a French professional basketball player for Olimpia Milano of the Italian Lega Basket Serie A (LBA) and the EuroLeague.

Le Havre finished fifth in the French League in the 2007–08 season; as a result Causeur played eight games with the team in the EuroCup 2008–09.

[4] In the 2016–17 season, Causeur won the Basketball Bundesliga title with Bamberg after sweeping EWE Baskets Oldenburg 3–0 in the Finals.

[6][7] In May 2018, Real Madrid won the 2017–18 EuroLeague championship, after defeating Fenerbahçe Doğuş in the final game with 85–80.

He was selected to the senior men's French national basketball team for the first time for the 2010 FIBA World Championship.