The Spinelli Group is an initiative founded with a view to reinvigorate the strive for federalisation of the European Union (EU), by creating a network of citizens, think tanks, NGOs, academics, writers and politicians who support the idea of a federal and united Europe. Among other goals, the Group aims to "find a federal majority [among members of the European Parliament] on important subjects." Founded on 15 September 2010 in the European Parliament (EP) in Brussels, the group is named after Altiero Spinelli (1907–1986), founder of the Union of European Federalists (UEF) and a founding father of the European integration.
The group was founded by Guy Verhofstadt, head of the liberal Alliance of Liberals and Democrats for Europe (ALDE) group in the Parliament and honorary president of the Union of European Federalists (UEF) in Belgium, former co-chair of the The Greens–European Free Alliance (Greens/EFA) group Daniel Cohn-Bendit, French MEP Sylvie Goulard (ALDE) and former EP Vice President Isabelle Durant (Greens/EFA), with the support of the Union of European Federalists.
The Spinelli Group is not the first initiative launched in the European Parliament, gathering together followers of European federalism ideas. On 9 July 1980, the Crocodile Club a group of MEPs was founded by Altiero Spinelli himself.