The 2017–18 Luxembourg Cup is the 93rd version of the football knockout tournament. This competition began on 9 September 2017. The winners of the cup will earn a spot in the 2018–19 Europa League and would begin play in the first qualifying round. F91 Dudelange are the defending champions after winning the previous season's Luxembourg Cup by defeating Fola Esch in the final by a score of 4–1.