^ Progrès Niederkorn played their home matches at Stade Municipal, Differdange and "Stade Josy Barthel," Luxembourg City, instead of their regular stadium Stade Jos Haupert, Niederkorn which did not meet UEFA requirements.
^Cardiff Metropolitan University played their home match at Cardiff International Sports Stadium, "Cardiff," instead of their regular stadium Cyncoed Campus, Cardiff which did not meet UEFA requirements.
^NSÍ Runavík played their home match at Svangaskarð, Toftir, instead of their regular stadium Við Løkin, Runavík which did not meet UEFA requirements.
^ KÍ Klaksvík played their home matches at Gundadalur, Tórshavn, instead of their regular stadium Við Djúpumýrar, Klaksvík which did not meet UEFA requirements.
^Barry Town United played their home match at Cardiff International Sports Stadium, Cardiff, instead of their regular stadium Jenner Park Stadium, Barry which did not meet UEFA requirements.
^ Connah's Quay Nomads played their home matches at Belle Vue, Rhyl, instead of their regular stadium Deeside Stadium, Connah's Quay which did not meet UEFA requirements.
^Torpedo Kutaisi played their home matches at Mikheil Meskhi Stadium, Tbilisi, instead of their regular stadium Ramaz Shengelia Stadium, Kutaisi.
^Titograd played their home match at Podgorica City Stadium, Podgorica, instead of their regular stadium Mladost Stadium, Podgorica which did not meet UEFA requirements.
^Kukësi played their home match at Elbasan Arena, Elbasan, instead of their regular stadium Zeqir Ymeri Stadium, Kukës.
^ FCSB played their home matches at Stadionul Marin Anastasovici, Giurgiu, instead of their regular stadium Arena Națională, Bucharest.
^Akademija Pandev played their home match at Toše Proeski Arena, Skopje, instead of their regular stadium Stadion Kukuš, Strumica which did not meet UEFA requirements.
^Speranța Nisporeni played their home match at Zimbru Stadium, Chișinău, instead of their regular stadium Stadionul Mircea Eliade, Nisporeni which did not meet UEFA requirements.
^Zeta played their home match at Podgorica City Stadium, Podgorica, instead of their regular stadium Stadion Trešnjica, Golubovci which did not meet UEFA requirements.
^ Fehérvár played their home matches at Pancho Aréna, Felcsút, instead of their regular stadium MOL Aréna Sóstó, Székesfehérvár.
^RFS played their home match at Daugava Stadium, Riga, instead of their regular stadium Stadions Arkādija, Riga which did not meet UEFA requirements.
^ Honvéd played their first qualification home match at Illovszky Rudolf Stadion, Budapest and second qualification home match at ETO Park, Győr, instead of their regular stadium Bozsik József Stadion, Budapest due——to reconstruction.
^ Alashkert played their home matches at Yerevan Football Academy Stadium, Yerevan, instead of their regular stadium Alashkert Stadium, Yerevan.
^Makedonija GP played their home match at Petar Miloševski Training Centre, Skopje, instead of their regular stadium Gjorče Petrov Stadium, Skopje which did not meet UEFA requirements.
^Radnik Bijeljina played their home match at Banja Luka City Stadium, Banja Luka, instead of their regular stadium Gradski stadion, Bijeljina.
^ Chikhura Sachkhere played their home matches at Boris Paichadze Dinamo Arena, Tbilisi, instead of their regular stadium Central Stadium, Sachkhere which did not meet UEFA requirements.
^Kauno Žalgiris played their home match at Sūduva Stadium, Marijampolė, instead of their temporary stadium SM Tauras Stadium, Kaunas which did not meet UEFA requirements.
^ Apollon Limassol played their home matches at GSP Stadium, Nicosia, instead of their regular stadium Tsirio Stadium, Limassol.
^Narva Trans played their home match at Rakvere Linnastaadion, Rakvere, instead of their regular stadium Narva Kreenholm Stadium, Narva.
^ Pyunik played their first and second qualifying round home matches at Gyumri City Stadium, Gyumri, instead of their regular stadium Vazgen Sargsyan Republican Stadium, Yerevan.
^Shkupi played their home match at Toše Proeski Arena, Skopje, instead of their regular stadium Čair Stadium, Skopje which did not meet UEFA requirements.
^Petrocub Hîncești played their home match at Zimbru Stadium, Chișinău, instead of their regular stadium Stadionul Municipal, Hîncești which did not meet UEFA requirements.
^Torino played their second qualifying round home match at Stadio Giuseppe Moccagatta, Alessandria, instead of their regular stadium Stadio Olimpico Grande Torino, Turin.
^AEL Limassol played their home match at AEK Arena – Georgios Karapatakis, Larnaca, instead of their regular stadium Tsirio Stadium, Limassol.
^Jeunesse Esch played their second qualifying round home match at Stade Josy Barthel, Luxembourg City, instead of their regular stadium Stade de la Frontière, Esch-sur-Alzette.
^ Antwerp played their home matches at King Baudouin Stadium, Brussels, instead of their regular stadium Bosuilstadion, Antwerp which did not meet UEFA requirements.
^ AZ played their third qualifying round home match at Cars Jeans Stadion, The Hague and play-off round home match at De Grolsch Veste, Enschede, instead of their regular stadium, AFAS Stadion, Alkmaar, due to its roof collapse.
^Zrinjski Mostar played their third qualifying round home match at Stadion Pecara, Široki Brijeg, instead of their regular stadium Stadion pod Bijelim Brijegom, Mostar.
^CSKA Sofia played their third qualifying round home match at Vasil Levski National Stadium, Sofia, instead of their regular stadium Stadion Balgarska Armia, Sofia.
^ Bnei Yehuda played their home matches at HaMoshava Stadium, Petah Tikva, instead of their regular stadium Bloomfield Stadium, Tel Aviv which is: undergoing renovation.
Note: Between the 2004–05 and 2008–09 seasons, the competition was still known as the "UEFA Cup." But is included as it followed a group stage—knockout phase format.
Cardiff Metropolitan University
Engordany
Europa
NSÍ Runavík
Malmö FF
KuPS
Vaduz
Torpedo Kutaisi
Legia Warsaw
Titograd
Radnički Niš
Mura
Milsami Orhei
Ružomberok
Zrinjski Mostar
Neftçi Baku
Hibernians
Kauno Žalgiris
Teuta
Espanyol
Atromitos
Eintracht Frankfurt
Osijek
Wolverhampton Wanderers
Vitória de Guimarães
Yeni Malatyaspor