A European Commissioner is a member of the European Commission. Each Commissioner within the college holds a specific portfolio and are led by the President of the European Commission. In simple terms they are the equivalent of national ministers. Each European Union member state has the right to a single commissioner (prior to 2004, the four largest states—France, Germany, Spain and the United Kingdom—were granted two) and appoints them in consultation with the President.
A number of commissioners were formally nominated and assigned portfolios before being withdrawn after their hearing with the European Parliament, with the exception of Thorvald Stoltenberg, who withdrew after the rejection of Norway's ascension referendum.
^Ferrero-Waldner held the External Relations brief in the Barroso I Commission until 1 December 2009, when Catherine Ashton became High Representative. She was then moved to Trade for the rest of her term.
^Coppé was elevated to President of the High Authority from 1 March 1967 to 5 July 1967 following Rinaldo Del Bo's resignation.
^Finet served in the Del Bo Authority from 10 January 1964 to 18 May 1965, his death.
^ abBusquin served in the Prodi Commission until 18 July 2004, when Michel assumed office.
^ abMichel served in the Barroso I Commission until 17 July 2009, when De Gucht assumed office.
^Kuneva served in the Barroso I Commission from 1 January 2007, Bulgaria's accession.
^Mimica served in the Barroso II Commission from 1 January 2013, Croatia's accession.
^Kyprianou served in the Prodi Commission from 1 January 2004, Cyprus's accession.
^ abKyprianou served in the Barroso I Commission until 3 March 2008, when Vassiliou assumed office.
^Telička served in the Prodi Commission from 1 January 2004, the Czech Republic's accession.
^ abGundelach served in the Thorn Commission until 13 January 1981, his death. Dalsager assumed office on 20 January 1981.
^Kallas served in the Prodi Commission from 1 May 2004, Estonia's ascension.
^ abLiikanen served in the Prodi Commission until 12 July 2004, when Rehn assumed office.
^Rehn was elevated to Vice President and given the Euro brief in the Barroso II Commission from 27 October 2011.
^ abRehn served in the Barroso II Commission until 1 July 2014, when Katainen assumed office.
^Reynaud served in the Del Bo Authority until September 1963; he served again from 10 January 1964.
^ abCheysson served in the Thorn Commission until 23 April 1981. Pisani assumed office on 26 May 1981.
^Pisani served in the Thorn Commission from 26 May 1981 – 3 December 1984 and was not replaced.
^ abBarnier served in the Prodi Commission until 31 March 2004, when Barrot assumed office.
^Barrot held the Transport brief in the Barroso I Commission until 9 May 2008, when Franco Frattini resigned. He was then moved to Justice, Freedom and Security for the rest of his term.
^Barnier was elevated to Vice President in the Barroso II Commission from 1 July 2014.
^Etzel served in the Mayer Authority until 28 October 1957.
^Blücher served in the Finet Authority until 26 March 1959, his death.
^ abPotthof served in the Malvestiti Authority until 10 August 1962. He was replaced by Hettlage on 14 December 1962.
^Hellwig served in the Del Bo Authority from 10 January 1964.
^ abPfeiffer served in the Delors I Commission until 1 August 1987, his death. He was replaced by Schmidhuber on 2 September 1987.
^Pfeiffer held the Employment, Credit and Investment briefs in the Delors I Commission until 5 January 1986, with Portugal and Spain's accession.
^Oettinger was elevated to Vice President in the Barroso II Commission from 1 July 2014.
^Varfis held the Regional Policy and Parliamentary Relations briefs in the Delors I Commission until 5 January 1986, with Portugal and Spain's accession.
^ abDiamantopoulou served in the Prodi Commission until 10 March 2004, when Dimas assumed office.
^Balázs served in the Prodi Commission from 1 January 2004, Hungary's accession.
^Hillery served in the Ortoli Commission until 2 December 1976 and was not replaced.
^ abO'Kennedy served in the Thorn Commission until 3 March 1982. Burke assumed office on 1 April 1982.
^held the Social Affairs, Education and Training briefs in the Delors I Commission until 5 January 1986, with Portugal and Spain's accession.
^Del Bo served as President of the High Authority until 1 March 1967, when Albert Coppé assumed office. There was no replacement in the interim Coppé Authority.
^ abMalvestiti served in the Hallstein I Commission until 15 September 1959. Caron assumed office on 24 November 1959.
^Petrilli served in the Hallstein I Commission until 8 February 1961, when Sandri assumed office.
^ abCaron served in the Hallstein II Commission until 15 May 1963. Paliano assumed office on 30 July 1964.
^Sandri was elevated to Vice President in the Hallstein II Commission from 30 July 1965.
^Paliano served in the Rey Commission until 8 May 1970 and was not replaced.
^ abSpinelli served in the Ortoli Commission until 13 July 1976, when Guazzaroni assumed office.
^ abFrattini served in the Barroso I Commission until 23 April 2008. Tajani assumed office on 18 June 2008.
^ abTajani served in the Barroso II Commission until 1 July 2014. Feroci assumed office on 16 July 2014.
^Kalniete served in the Prodi Commission from 1 May 2004, Latvia's ascension.
^Grybauskaitė served in the Prodi Commission from 1 May 2004, Lithuania's ascension.
^ abGrybauskaitė served in the Barroso I Commission until 1 July 2009, when Šemeta assumed office.
^Fohrmann served in the Del Bo / Coppé Authority from 30 June 1965.
^ abRasquin served in the Hallstein I Commission until 27 April 1958, his death. Schaus assumed office on 18 June 1958.
^Santer served as President of the Commission until 15 March 1999, when Manuel Marín assumed office. There was no replacement in the interim Marín Commission.
^ abReding served in the Barroso II Commission until 1 July 2014. Reicherts assumed office on 16 July 2014.
^Borg served in the Prodi Commission from 1 May 2004, Malta's ascension.
^ abDalli served in the Barroso II Commission until 16 October 2012. Borg assumed office on 28 November 2012.
^Borg held the Consumer Policy brief in the Barroso II Commission until 1 July 2013, with Croatia's accession.
^ abSpierenburg served in the Malvestiti Authority until 25 September 1962. Homan assumed office on 15 December 1962.
^Spierenburg served in the Del Bo Authority until 7 June 1965 and was not replaced.
^Andriessen held the Fisheries brief in the Delors I Commission until 5 January 1986, Portugal's ascension.
^Hübner served in the Prodi Commission from 1 May 2004, Poland's ascension.
^ abHübner served in the Barroso I Commission until 4 July 2009, when Samecki assumed office.
^ abLewandowski served in the Barroso II Commission until 1 July 2014. Dominik assumed office from 16 July 2014.
^Cunha served in the Delors I Commission from 5 January 1986, Portugal's ascension.
^Orban served in the Barroso I Commission from 1 January 2007, Romania's accession.
^Figeľ served in the Prodi Commission from 1 May 2004, Slovakia's ascension.
^Figeľ held the Multilingualism brief in the Barroso I Commission until 1 January 2007, Romania's ascension.
^Potočnik served in the Prodi Commission from 1 May 2004, Slovenia's ascension.
^Matutes served in the Delors I Commission from 5 January 1986, Spain's ascension.
^ abMatutes served in the Delors III Commission until 27 April 1994, when Oreja assumed office.
^Marín served in the Delors I Commission from 5 January 1986, Spain's ascension.
^Marín was elevated to President of the Commission from 16 March 1999 to 12 September 1999 following Jacques Santer's resignation.
^ abSolbes served in the Prodi Commission until 10 April 2004. Almunia assumed office on 24 April 2004.
^Clinton-Davis held the Consumer Protection brief in the Delors I Commission until 5 January 1986, with Portugal and Spain's accession.
^ abMandelson served in the Barroso I Commission until 3 October 2008. Ashton assumed office on 24 October 2008.
^Ashton held the Trade brief in the Barroso I Commission until 1 December 2009. She was then moved to Foreign Affairs and Security Policy for the rest of her term.