| Name | National party | EP Group |
| Generoso Andria | Forza Italia | EPP–ED |
| Roberta Angelilli | National Alliance | NI (until 21 July 1999) UEN |
| Paolo Bartolozzi | Forza Italia | EPP–ED |
| Sergio Berlato | National Alliance | NI (until 21 July 1999) UEN |
| Fausto Bertinotti | Communist Refoundation Party (Until 28 April 2004) Communist Refoundation Party - European Left | EUL–NGL |
| Roberto Felice Bigliardo | Movimento Sociale Flamma Tricolore (until 4 September 2000) Movimento Sociale Europeo (until 31 May 2001) National Alliance | TGI (until 30 September 2001) UEN |
| Guido Bodrato | Italian People's Party | EPP–ED |
| Emma Bonino | Bonino List | TGI (until 2 October 2001) NI |
| Mario Borghezio | Northern League | TGI (until 2 October 2001) NI |
| Enrico Boselli | Italian Democratic Socialists | PES |
| Giuseppe Brienza | Christian Democratic Centre (until 30 January 2003) United Christian Democrats | EPP–ED |
| Renato Brunetta | Forza Italia | EPP–ED |
| Marco Cappato | Bonino List | TGI (until 2 October 2001) NI |
| Massimo Carraro | Democrats of the Left | PES |
| Giorgio Celli | Federation of the Greens | G–EFA |
| Luigi Cesaro | Forza Italia | EPP–ED |
| Luigi Cocilovo | People's Party | EPP–ED |
| Armando Cossutta | Party of Italian Communists | EUL–NGL |
| Paolo Costa | The Democrats (Italy) | ELDR |
| Raffaele Costa | Forza Italia | EPP–ED |
| Benedetto Della Vedova | Bonino List | TGI (until 2 October 2001) NI |
| Gianfranco Dell'alba | Bonino List | TGI (until 2 October 2001) NI |
| Marcello Dell'Utri | Forza Italia | EPP–ED |
| Luigi Ciriaco De Mita | People's Party | EPP–ED |
| Giuseppe Di Lello Finuoli | Communist Refoundation Party (Until 28 April 2004) Communist Refoundation Party - European Left | EUL–NGL |
| Antonio Di Pietro | The Democrats (Italy) (13 June 2000) Italy of Values | ELDR |
| Massimo Cacciari (until 26 May 2000) Luciano Caveri (from 21 June 2000 until 7 July 2003) Giorgio Calò (from 3 September 2003) | The Democrats (Italy) (until 26 May 2000) Valdostan Union (until 7 July 2003) Italy of Values | ELDR |
| Olivier Dupuis | Bonino List | TGI (until 2 October 2001) NI |
| Michl Ebner | South Tyrolean People's Party | EPP–ED |
| Carlo Fatuzzo | Pensioners' Party | EPP–ED |
| Giovanni Claudio Fava | Democrats of the Left | PES |
| Enrico Ferri | Forza Italia | EPP–ED |
| Francesco Fiori | Forza Italia | EPP–ED |
| Marco Formentini | Northern League (20 March 2002) The Democrats (Italy) | NI (4 October 1999) ELDR |
| Giuseppe Gargani | Forza Italia | EPP–ED |
| Jas Gawronski | Forza Italia | EPP–ED |
| Vitaliano Gemelli | Christian Democratic Centre (until 30 January 2003) United Christian Democrats | EPP–ED |
| Fiorella Ghilardotti | Democrats of the Left | PES |
| Gian Paolo Gobbo | Northern League | TGI (until 2 October 2001) NI |
| Renzo Imbeni | Democrats of the Left | PES |
| Vincenzo Lavarra | Democrats of the Left | PES |
| Giorgio Lisi | Forza Italia | EPP–ED |
| Raffaele Lombardo | Christian Democratic Centre (until 30 January 2003) United Christian Democrats | EPP–ED |
| Lucio Manisco | Party of Italian Communists | EUL–NGL |
| Mario Mantovani | Forza Italia | EPP–ED |
| Franco Marini | People's Party | EPP–ED |
| Claudio Martelli | Italian Democratic Socialists | PES (until 29 August 2000) NI (until 14 November 2000) TGI (until 2 October 2001) NI (until 6 March 2002) ELDR |
| Clemente Mastella | Union of Democrats for Europe | EPP–ED |
| Mario Mauro | Forza Italia | EPP–ED |
| Pietro Mennea | The Democrats (Italy) (until 13 June 2000) Italy of Values (until 3 February 2002) Forza Italia (until 7 July 2003) Independent (until 26 October 2003) Liberali Democratici Europei (Italy) | ELDR (until 3 February 2002) EPP–ED (until 7 July 2003) NI |
| Domenico Mennitti | Forza Italia | EPP–ED |
| Reinhold Messner | Federation of the Greens | G–EFA |
| Luisa Morgantini | Communist Refoundation Party (Until 28 April 2004) Communist Refoundation Party - European Left | EUL–NGL |
| Cristiana Muscardini | National Alliance | NI (until 21 July 1999) UEN |
| Francesco Musotto | Forza Italia | EPP–ED |
| Antonio Mussa | National Alliance | UEN |
| Sebastiano Musumeci | National Alliance | NI (until 21 July 1999) UEN |
| Pasqualina Napoletano | Democrats of the Left | PES |
| Giorgio Napolitano | Democrats of the Left | PES |
| Giuseppe Nisticò | Forza Italia | EPP–ED |
| Mauro Nobilia | National Alliance | NI (until 21 July 1999) UEN |
| Elena Ornella Paciotti | Democrats of the Left | PES |
| Marco Pannella | Bonino List | TGI (until 2 October 2001) NI |
| Paolo Pastorelli | Christian Democratic Centre (until 30 January 2003) United Christian Democrats | EPP–ED |
| Giuseppe Pisicchio | Italian Renewal | EPP–ED |
| Giovanni Pittella | Democrats of the Left | PES |
| Guido Podestà | Forza Italia | EPP–ED |
| Adriana Poli Bortone | National Alliance | NI (until 21 July 1999) UEN |
| Giovanni Procacci | The Democrats (Italy) | ELDR |
| Giorgio Ruffolo | Democrats of the Left | PES |
| Francesco Rutelli | The Democrats (Italy) | ELDR |
| Guido Sacconi | Democrats of the Left | PES |
| Giacomo Santini | Forza Italia | EPP–ED |
| Amalia Sartori | Forza Italia | EPP–ED |
| Luciana Sbarbati | Italian Republican Party European Republicans Movement | ELDR |
| Umberto Scapagnini | Forza Italia | EPP–ED |
| Mariotto Segni | Segni Pact | NI (until 21 July 1999) UEN |
| Francesco Enrico Speroni | Northern League | TGI (until 2 October 2001) NI |
| Antonio Tajani | Forza Italia | EPP–ED |
| Bruno Trentin | Democrats of the Left | PES |
| Franz Turchi | National Alliance | NI (until 21 July 1999) UEN |
| Maurizio Turco | Bonino List | TGI (until 2 October 2001) NI |
| Gianni Vattimo | Democrats of the Left | PES |
| Walter Veltroni | Democrats of the Left | PES |
| Luigi Vinci | Communist Refoundation Party (Until 28 April 2004) Communist Refoundation Party - European Left | EUL–NGL |
| Demetrio Volcic | Democrats of the Left | PES |
| Stefano Zappalà | Forza Italia | EPP–ED |
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