Seven clubs competed with a total of 17 teams for one spot in the first qualifying round[1] of the 2017–18 UEFA Europa League.
FC Vaduz are the defending champions.
The first round involved the teams which did not reach the previous season's semifinals.
FC Vaduz II (U23) did not enter the competition.
The quarterfinals involved the four teams who won in the second round, as well as the semifinalists in the last season (FC Vaduz, USV Eschen/Mauren, FC Balzers II and FC Schaan).