A total of 190 teams from all 55
UEFA member associations participated in the 2017–18 UEFA Europa League. The association ranking based on the
UEFA country coefficients was used to determine the number of participating teams for each association: • Associations 1–51 (except Liechtenstein) each had three teams qualify. • As the winners of the
2016–17 UEFA Europa League,
Manchester United qualified for the
2017–18 UEFA Champions League; the 2017–18 UEFA Europa League berth they would otherwise have earned for finishing 6th in the
2016–17 Premier League was vacated and not passed to another English team. • Associations 52–54 each had two teams qualify. •
Liechtenstein and
Kosovo (association 55) each had one team qualify (Liechtenstein organised only a domestic cup and no domestic league; Kosovo as per decision by the UEFA Executive Committee).
Kosovo, who became a UEFA member on 3 May 2016, made their debut in the UEFA Europa League. Apart from the allocation based on the country coefficients, associations could have additional teams participating in the Europa League, as noted below: • – Additional teams transferred from the UEFA Champions League • – Vacated berth due to UEFA Europa League title holders playing in UEFA Champions League
Distribution In the default access list,
Manchester United entered the group stage (as the sixth-placed team of the
2016–17 Premier League). However, since they qualified for the Champions League as the Europa League title holders, the spot which they qualified for in the Europa League group stage was vacated, and the following changes to the default allocation system were made: • The domestic cup winners of association 13 (Czech Republic) are promoted from the third qualifying round to the group stage. • The domestic cup winners of association 18 (Poland) are promoted from the second qualifying round to the third qualifying round. • The domestic cup winners of associations 25 (Scotland) and 26 (Azerbaijan) are promoted from the first qualifying round to the second qualifying round.
Redistribution rules A Europa League place was vacated when a team qualified for both the Champions League and the Europa League, or qualified for the Europa League by more than one method. When a place was vacated, it was redistributed within the national association by the following rules (regulations Articles 3.03 and 3.04): • CW: Cup winners • 2nd, 3rd, 4th, 5th, 6th, etc.: League position • LC: League Cup winners • RW: Regular season winners • PW: End-of-season European competition play-offs winners • UCL: Transferred from the Champions League • GS: Third-placed teams from the group stage • PO: Losers from the play-off round • Q3: Losers from the third qualifying round Notably two teams took part in the competition that were not playing in their national top division,
Tirana (
2nd tier) and
Vaduz (representing Liechtenstein, playing in
Swiss second tier). ;Notes ==Round and draw dates==