| Name | National party | Constituency | EP Group | 
| Filip Adwent (until 26 June 2005) Andrzej Tomasz Zapałowski (from 12 July 2005)
 | League of Polish Families (LPR) (until 13 June 2007)   Independent
 | Podkarpackie | IND&DEM (until 12 December 2006)   UEN
 | 
| Adam Bielan | Law and Justice (PiS) | Lesser Poland and Świętokrzyskie | UEN | 
| Jerzy Buzek | Civic Platform (PO) | Silesia | EPP–ED | 
| Zdzisław Chmielewski | Civic Platform (PO) | Lubusz and West Pomerania | EPP–ED | 
| Sylwester Chruszcz | League of Polish Families (LPR) (until 3 December 2008)   Forward Poland (NP)
 | Lower Silesian and Opole | IND&DEM (until 14 December 2005)   NI (until 17 December 2008)
   UEN
 | 
| Marek Czarnecki | Self-Defence of the Republic of Poland (SRP) (until 4 May 2008)   Independent
 | Masovia | NI (until 14 November 2006)   UEN (until 9 June 2008)
   ALDE
 | 
| Ryszard Czarnecki | Self-Defence of the Republic of Poland (SRP) (until 23 January 2008)   Independent (until 9 October 2008)
   Law and Justice (PiS)
 | Lower Silesian and Opole | NI (until 14 November 2006)   UEN
 | 
| Anna Elżbieta Fotyga (until 22 November 2005) Hanna Foltyn-Kubicka (from 7 December 2005)
 | Law and Justice (PiS) | Pomerania | UEN | 
| Bronisław Geremek (until 13 July 2008) Andrzej Wielowieyski (from 26 August 2008)
 | Freedom Union (UW) (until 14 June 2005)   Freedom Union - Democratic Party
 | Warsaw | ALDE | 
| Lidia Geringer de Oedenberg | Democratic Left Alliance – Labour Union (SLD-UP) | Lower Silesian and Opole | PES | 
| Adam Gierek | Democratic Left Alliance – Labour Union (SLD-UP) | Silesia | PES | 
| Maciej Giertych | League of Polish Families (LPR) | Silesia | IND&DEM  (until 14 December 2005)   NI
 | 
| Bogdan Golik | Self-Defence of the Republic of Poland (SRP) (until 16 December 2007)   Independent
 | Łódź | NI (until 30 November 2004)   PES
 | 
| Genowefa Grabowska | Social Democracy of Poland (SDPL) | Silesia | PES | 
| Dariusz Grabowski | League of Polish Families (LPR) (4 June 2007)   Independent
 | Masovia | IND&DEM (until 12 December 2006)   UEN
 | 
| Małgorzata Handzlik | Civic Platform (PO) | Silesia | EPP–ED | 
| Stanisław Jałowiecki | Civic Platform (PO) | Lower Silesian and Opole | EPP–ED | 
| Mieczysław Janowski | Law and Justice (PiS) | Podkarpackie | UEN | 
| Filip Kaczmarek | Civic Platform (PO) | Greater Poland | EPP–ED | 
| Michał Kamiński (until 6 August 2007) Ewa Tomaszewska (from 30 August 2007)
 | Law and Justice (PiS) | Warsaw | UEN | 
| Bogdan Klich (until 15 November 2007) Urszula Gacek (from 6 December 2007)
 | Civic Platform (PO) | Lesser Poland and Świętokrzyskie | EPP–ED | 
| Urszula Krupa | League of Polish Families (LPR) (13 June 2006)   Independent
 | Łódź | IND&DEM | 
| Wiesław Kuc | Self-Defence of the Republic of Poland (SRP) | Lublin | NI (until 30 November 2004)   PES (until 12 December 2006)
   UEN
 | 
| Barbara Kudrycka (until 15 November 2007) Krzysztof Hołowczyc  (from 6 December 2007)
 | Civic Platform (PO) (until 18 December 2007)   Independent
 | Podlaskie and Warmian-Masuria | EPP–ED | 
| Jan Kułakowski | Freedom Union (UW) | Greater Poland | ALDE | 
| Zbigniew Kuźmiuk | Polish People's Party (PSL) | Masovia | EPP–ED (12 December 2005)   UEN
 | 
| Janusz Lewandowski | Civic Platform (PO) | Pomerania | EPP–ED | 
| Bogusław Liberadzki | Democratic Left Alliance – Labour Union (SLD-UP) | Lubusz and West Pomeranian |   PES
 | 
| Marcin Libicki | Law and Justice (PiS) | Greater Poland | UEN | 
| Janusz Wojciechowski | Polish People's Party (PSL) |  | EPP–ED (12 December 2005)   UEN
 | 
| Jan Masiel | Self-Defence of the Republic of Poland (SRP)   Polish People's Party "Piast" (PSL Piast)
 |  | NI (14 November 2006)   UEN
 | 
| Jan Olbrycht |  |  | EPP–ED | 
| Janusz Onyszkiewicz |  |  | ALDE | 
| Bogdan Pęk | League of Polish Families (LPR) (until 24 January 2006)   Independent (until 5 November 2008)
   Forward Poland (NP) 
 | Lesser Poland and Świętokrzyskie | IND&DEM (until 12 December 2006)   UEN
 | 
| Józef Pinior | Social Democracy of Poland (SDPL) |  | PES | 
| Mirosław Piotrowski | League of Polish Families (LPR) (3 December 2006)   Independent
 |  | IND&DEM (until 12 December 2006)   UEN
 | 
| Paweł Piskorski | Civic Platform (PO) (until 31 March 2009)   Alliance of Democrats
 |  | EPP–ED (until 30 April 2006)   NI (22 October 2006)
   ALDE
 | 
| Zdzisław Podkański | Polish People's Party (PSL) |  | EPP–ED (until 12 December 2005)   UEN
 | 
| Jacek Protasiewicz | Civic Platform (PO) |  | EPP–ED | 
| Bogusław Rogalski | League of Polish Families (LPR) (until 24 January 2006)   Polish Forum (until 2 December 2008)
   Forward Poland (NP) 
 | Podlaskie and Warmian-Masuria | IND&DEM (until 12 December 2006)   UEN
 | 
| Dariusz Rosati |  |  | PES | 
| Wojciech Roszkowski |  |  | UEN | 
| Leopold Rutowicz | Self-Defence of the Republic of Poland (SRP) |  | NI (until 14 November 2006)   UEN
 | 
| Jacek Saryusz-Wolski |  |  | EPP–ED | 
| Czesław Siekierski |  |  | EPP–ED | 
| Marek Siwiec |  |  | PES | 
| Bogusław Sonik |  |  | EPP–ED | 
| Grażyna Staniszewska |  |  | ALDE | 
| Andrzej Szejna |  |  | PES | 
| Konrad Szymański |  |  | UEN | 
| Witold Tomczak | League of Polish Families (LPR) | Greater Poland | IND&DEM | 
| Wojciech Wierzejski (until 6 October 2005) Bernard Piotr Wojciechowski (from 26 October 2005)
 | League of Polish Families (LPR) (until 15 April 2007)   Independent
 |  | IND&DEM (until 14 December 2005)   NI (until 28 March 2007)
   IND&DEM
 | 
| Zbigniew Zaleski |  |  | EPP–ED | 
| Tadeusz Zwiefka | Civic Platform (PO) | Kuyavian-Pomerania | EPP–ED |