Luxembourg football clubs have participated in European football competitions since Spora Luxembourg took part in the 1956–57 European Cup.
In total, 23 different clubs have represented Luxembourg in European competition.
Of these, 14 are still in existence while the remaining 9 were merged into a new or existing team.
Teams listed in bold in the table below are still active in 2019–20 European competitions.
PR = Preliminary round; QR = Qualifying round; R1/R2 = First/Second round; Q1/Q2/Q3 = First/Second/Third qualifying round; R16 = Round of 16 PR = Preliminary round; QR = Qualifying round; R1/R2 = First/Second round; Q1/Q2/Q3 = First/Second/Third qualifying round; PO: Play-off Round; Grp: Group Stage PR = Preliminary round; QR = Qualifying round; R1/R2 = First/Second round; Q1/Q2/Q3 = First/Second/Third qualifying round; PO: Play-off Round; Grp: Group Stage PR = Preliminary round; QR = Qualifying round; R1/R2 = First/Second round R1/R2 = First/Second round