Union Luxembourg qualified for UEFA European competition 21 times. •
UEFA Champions League :Qualifying round (1): 1971–72 :First round (4): 1962–63, 1990–91, 1991–92, 1992–93 • '''
UEFA Cup Winners' Cup''' :Qualifying round (2): 1996–97, 1997–98 :First round (8): 1963–64, 1964–65, 1969–70, 1970–71, 1978–79, 1984–85, 1986–87, 1989–90 •
UEFA Cup :Qualifying round (1): 1998–99 :First round (5): 1965–66, 1966–67, 1973–74, 1988–89, 1993–94 Without having won a tie, Union won two matches against European opponents. The first came in 1970–71, against Turkish side
Göztepe in the Cup Winners' Cup. Göztepe had won the first leg 5–0, but Union managed a 1–0 victory in the home leg (this was very limited revenge, as Göztepe had knocked Union out the previous year, too). Their second victory was over
Bodø/Glimt of
Norway, by one goal to nil, having losing the first leg 4–1. Union also managed draws against
Botev Plovdiv and
Djurgårdens IF in 1984–85 and 1989–90 respectively. ==Managers==