
The political groups of the European Parliament are the parliamentary groups of the European Parliament. The European Parliament is unique among supranational assemblies in that its members (MEPs) organise themselves into ideological groups as in traditional national legislatures. The members of other supranational assemblies form national groups. The political groups of the European Parliament are usually the formal representation of a European political party in the Parliament. In other cases, they are political coalitions of a number of European parties, national parties, and independent politicians.

Europe of Freedom and Direct Democracy was a Eurosceptic and populist political group in the European Parliament. The EFDD group was a continuation for the Eighth European Parliament of the Europe of Freedom and Democracy (EFD) group that existed during the Seventh European Parliament, with significant changes to group membership.

The European Conservatives and Reformists (ECR) is a Eurosceptic, anti-federalist political group of the European Parliament. The ECR is the parliamentary group of the European Conservatives and Reformists Party European political party (formerly known as the Alliance of Conservatives and Reformists in Europe or Alliance of European Conservatives and Reformists, but also includes MEPs from four other European parties and thirteen MEPs without European party affiliation.

The European People's Party Group is a centre-right political group of the European Parliament consisting of deputies (MEPs) from the member parties of the European People's Party (EPP). It sometimes includes independent MEPs and/or deputies from unaffiliated national parties. The EPP Group comprises politicians of Christian-democratic, conservative and liberal-conservative orientation.

The European Party for Individual Liberty (EPIL) is a right-libertarian European political party established in Utrecht in September 2013 by The Utrecht Declaration and Covenant of European Classical Liberal and Libertarian Parties.

The Group of the Alliance of Liberals and Democrats for Europe was the liberal–centrist political group of the European Parliament from 2004 until 2019. It was made up of MEPs from two European political parties, the Alliance of Liberals and Democrats for Europe Party and the European Democratic Party, which collectively form the Alliance of Liberals and Democrats for Europe.

Identity and Democracy is a right-wing to far-right political group of the European Parliament, launched on 13 June 2019 for the Ninth European Parliament term. It is composed of nationalist, right-wing populist and eurosceptic national parties from ten European nations. It is the successor to the Europe of Nations and Freedom group formed during the eighth term.

Non-Inscrits are Members of the European Parliament (MEP) who do not belong to one of the recognised political groups.

The Progressive Alliance of Socialists and Democrats (S&D) is the political group in the European Parliament of the Party of European Socialists (PES). The Progressive Alliance of Socialists and Democrats was officially founded as a Socialist Group on 29 June 1953 which makes it the second oldest political group in the European Parliament after the Alliance of Liberals and Democrats for Europe group (ALDE). It adopted its present-day name on 23 June 2009. Centre-left in orientation, the group mostly comprises social-democratic parties and is affiliated with the Progressive Alliance and Socialist International.

Renew Europe (Renew) is a liberal, pro-European political group of the European Parliament founded for the ninth European Parliament term. The group is the successor to the Alliance of Liberals and Democrats for Europe (ALDE) group which existed during the sixth, seventh and eighth terms from 2004 to 2019. Renew Europe in the European Committee of the Regions is the sister group of Renew Europe.