There are two names that fans will remember from last season. Boro's first ever European opponents Banik Ostrava, who qualified this season as Czech Cup winners, and Grazer AK who Boro played in the Round of 32, they qualified as runners-up in the Austrian Bundesliga Endstand.
Banik will enter the competition at the first round stage with Boro, while Grazer will start the the second qulifying round.
The full list, before the Intertoto Cup winners and Champions League drop-outs are added is:
UEFA Cup 2005-06 Entrant List | ||
| Team | Country | Entry Round |
| PFC CSKA Moskva***** | Russia | 1st |
| RCD Espanyol | Spain | 1st |
| Sevilla FC | Spain | 1st |
| CA Osasuna** | Spain | 1st |
| Bolton Wanderers FC | England | 1st |
| Middlesbrough FC | England | 1st |
| UC Sampdoria | Italy | 1st |
| US Città di Palermo | Italy | 1st |
| AS Roma** | Italy | 1st |
| Hertha BSC Berlin | Germany | 1st |
| VfB Stuttgart | Germany | 1st |
| Bayer 04 Leverkusen | Germany | 1st |
| AJ Auxerre* | France | 1st |
| Stade Rennais FC | France | 1st |
| RC Strasbourg**** | France | 1st |
| Vitória FC* | Portugal | 1st |
| SC Braga | Portugal | 1st |
| Vitória SC | Portugal | 1st |
| AEK Athens FC | Greece | 1st |
| Xanthi FC | Greece | 1st |
| PAOK FC | Greece | 1st |
| Aris Thessaloniki FC** | Greece | 1st |
| AZ Alkmaar | Netherlands | 1st |
| Feyenoord | Netherlands | 1st |
| SC Heerenveen | Netherlands | 1st |
| Willem II** | Netherlands | 1st |
| FC Baník Ostrava* | Czech Republic | 1st |
| Galatasaray SK* | Turkey | 1st |
| Hibernian FC | Scotland | 1st |
| KFC Germinal Beerschot Antwerpen FC* | Belgium | 1st |
| + 3 Intertoto Cup winners | 1st | |
| + 16 ex-Champions League teams | 1st | |
| + 8 ex-Champions League teams | Round of 32 | |
| FK Teplice | Czech Republic | Q2 |
| Besiktas JK | Turkey | Q2 |
| Dundee United FC** | Scotland | Q2 |
| KRC Genk | Belgium | Q2 |
| FC Zürich* | Switzerland | Q2 |
| Grasshopper-Club | Switzerland | Q2 |
| FC Metalurh Donetsk | Ukraine | Q2 |
| FC Dnipro Dnipropetrovsk | Ukraine | Q2 |
| SK Brann* | Norway | Q2 |
| Tromsø IL | Norway | Q2 |
| Groclin Grodzisk Wielkopolski* | Poland | Q2 |
| Legia Warszawa | Poland | Q2 |
| Wisla Plock | Poland | Q2 |
| Maccabi Tel-Aviv FC* | Israel | Q2 |
| Maccabi Petach-Tikva FC | Israel | Q2 |
| FC Ashdod | Israel | Q2 |
| FK Austria Wien* | Austria | Q2 |
| Grazer AK | Austria | Q2 |
| SV Pasching | Austria | Q2 |
| FK Crvena Zvezda | Serbia and Montenegro | Q2 |
| FK Zeta | Serbia and Montenegro | Q2 |
| OFK Beograd | Serbia and Montenegro | Q2 |
| PFC Levski Sofia* | Bulgaria | Q2 |
| PFC Lokomotiv Plovdiv | Bulgaria | Q2 |
| PFC Litex Lovech | Bulgaria | Q2 |
| FC Krylya Sovetov Samara | Russia | Q2 |
| FC Zenit St. Petersburg | Russia | Q2 |
| FC København | Denmark | Q2 |
| FC Midtjylland** | Denmark | Q2 |
| HNK Rijeka* | Croatia | Q2 |
| NK Inter Zaprešic | Croatia | Q2 |
| Djurgårdens IF* | Sweden | Q2 |
| Halmstads BK | Sweden | Q2 |
| Matáv Football Club Sopron* | Hungary | Q2 |
| FC Dinamo Bucuresti* | Romania | Q2 |
| FK Dukla Banská Bystrica* | Slovakia | Q2 |
| NK Publikum* | Slovenia | Q2 |
| Viking FK**** | Norway | Q1 |
| 1. FSV Mainz 05**** | Germany | Q1 |
| Esbjerg fB**** | Denmark | Q1 |
| Ferencvárosi TC | Hungary | Q1 |
| AFC Rapid Bucuresti | Romania | Q1 |
| MŠK Žilina | Slovakia | Q1 |
| NK Domzale | Slovenia | Q1 |
| AC Omonia* | Cyprus | Q1 |
| APOEL FC | Cyprus | Q1 |
| FC Nistru Otaci* | Moldova | Q1 |
| FC Dacia Chisinau | Moldova | Q1 |
| FK Ventspils* | Latvia | Q1 |
| FHK Liepajas Metalurgs | Latvia | Q1 |
| Myllykosken Pallo-47* | Finland | Q1 |
| AC Allianssi | Finland | Q1 |
| NK Široki Brijeg | Bosnia-Herzegovina | Q1 |
| NK Zepce | Bosnia-Herzegovina | Q1 |
| FC Lokomotiv Tbilisi* | Georgia | Q1 |
| FC Torpedo Kutaisi | Georgia | Q1 |
| FK Baskimi* | FYR Macedonia | Q1 |
| FK Vardar | FYR Macedonia | Q1 |
| FK Ekranas | Lithuania | Q1 |
| FK Atlantas** | Lithuania | Q1 |
| FC MTZ-RIPO Minsk* | Belarus | Q1 |
| FC BATE Borisov | Belarus | Q1 |
| Keflavík* | Iceland | Q1 |
| ÍBV Vestmannaeyjar | Iceland | Q1 |
| Birkirkara FC* | Malta | Q1 |
| Hibernians FC | Malta | Q1 |
| Longford Town FC* | Republic of Ireland | Q1 |
| Cork City FC | Republic of Ireland | Q1 |
| FC MIKA* | Armenia | Q1 |
| FC Banants | Armenia | Q1 |
| Rhyl FC | Wales | Q1 |
| Carmarthen Town AFC** | Wales | Q1 |
| FC Vaduz* | Liechtenstein | Q1 |
| KS Teuta* | Albania | Q1 |
| KS Elbasani | Albania | Q1 |
| Portadown FC* | Northern Ireland | Q1 |
| Linfield FC | Northern Ireland | Q1 |
| FC TVMK Tallinn | Estonia | Q1 |
| FC Flora | Estonia | Q1 |
| CS Pétange* | Luxembourg | Q1 |
| FC Etzella Ettelbrück | Luxembourg | Q1 |
| FK Baku* | Azerbaijan | Q1 |
| FK Khazar Lenkoran | Azerbaijan | Q1 |
| B36 Tórshavn | Faroe Islands | Q1 |
| NSÍ Runavík** | Faroe Islands | Q1 |
| UE Sant Julià*** | Andora | Q1 |
| SP Domagnano*** | San Marino | Q1 |
| * domestic cup winners ** losing cup finalists *** national domestic championship winners **** fair play winners ***** UEFA Cup holders | ||