Jan Marinus Wiersma (born 26 August 1951 in Groningen) is a Dutch politician and from 1994-2009 Member of the European Parliament. He is a member of the Labour Party, vice-chair of the Party of European Socialists group, and sits on the European Parliament's Committee on Foreign Affairs.
He was also a member of the
Subcommittee on Security and Defence, a substitute for the Committee on Transport and Tourism, a member of the delegation to the EU– Romania Joint Parliamentary Committee, and a member of the delegation to the EU– Moldova Parliamentary Cooperation Committee.
Higher degree in
history (Groningen State University, 1978) Researcher on Foreign Affairs and Defence for the parliamentary PvdA group in the Second Chamber (1978–1987)
International Secretary and second Vice-Chairman of the PvdA (1987–1999)
Member of the European Parliament (1994–2009)
Vice-Chairman of the PSE Group (1999–2004)
Member of the PSE bureau (since 2004)
Member of the Steering Committee of the European Forum for Democracy and Solidarity