Legia has taken part in fifty-five UEFA cup editions: 25 times in the UEFA Cup and Europa League.
5 times the club has competed in the Intertoto Cup.
The club's first appearance was in the 1956–57 European Cup.
The club's best performance so far is reaching the semi-finals of the European Cup, which they managed in the 1969–70 season.
As of match played 19 December 2024 Note: italics means neutral place results or penalised result