Sébastien Grandjean (born 16 June 1970) is a Belgian football manager who is the manager of SL16 FC, the reserve team of Standard Liège that plays in the Belgian Division 1.
Grandjean is a licensed physiotherapist[1] and started his career with Belgian side FC Arlon in 2002.
Five years later, he was appointed manager of Luxembourgian side Jeunesse Esch, helping the club achieve second place in the league.
Subsequently, he was appointed manager of Belgian side UR La Louvière Centre in 2012.
Following his stint there, he was appointed manager of Luxembourgian side CS Fola Esch in 2020, helping the club win the league title.