2011–12 UEFA Europa League play-off round

Seeding

• Note 47: Greek club Olympiacos Volos, who had reached the play-off round, were excluded from the competition by UEFA on 11 August 2011 for their involvement in the Koriopolis match-fixing scandal. UEFA decided to replace them in the play-off round with Differdange 03 from Luxembourg, who had lost to Olympiakos Volou in the previous round.

  Matches

First leg

• Note 51: Vaslui played their home match at Stadionul Ceahlăul, Piatra Neamţ as their own Stadionul Municipal did not meet UEFA criteria.
• Note 52: Zestafoni played their home match on Boris Paichadze National Stadium, Tbilisi as it has a greater capacity than their own David Abashidze Stadium.
• Note 53: Steaua București played their home match at Stadionul Dr. Constantin Rădulescu, Cluj-Napoca as they have left their own Stadionul Steaua prior to the season.
• Note 54: Differdange 03 played their home match at Stade Josy Barthel, Luxembourg City as their own Stade du Thillenberg did not meet the UEFA criteria.

  Second leg

• Note 55: Gaz Metan Mediaș played their home match at Stadionul Dr. Constantin Rădulescu, Cluj-Napoca as their own Stadionul Gaz Metan did not meet the UEFA criteria.
• Note 56: CSKA Sofia played their home match at Vasil Levski National Stadium, Sofia as their own Balgarska Armiya Stadium did not meet the UEFA criteria.
• Note 57: Rapid București played their home match at Stadionul Dan Păltinişanu, Timișoara as they have left their own Stadionul Giuleşti-Valentin Stănescu prior to the season.
• Note 58: Trabzonspor were due to play their home match at Türk Telekom Arena, Istanbul as their own Hüseyin Avni Aker Stadium needed maintenance work after the 2011 European Youth Summer Olympic Festival.