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The main bodies of the European Union and Euratom are:

• the seven principal institutions of the European Union, including the one which is an international entity (the European Central Bank)
• other bodies of the EU established through primary (treaty) legislation, either as international law bodies (the European Investment Bank Group entities, the European University Institute, the European Stability Mechanism and the Unified Patent Court) or as bodies without juridical personality (the European Ombudsman, the advisory bodies to the European Union)
• the agencies, decentralised independent bodies and joint undertakings of the European Union and Euratom, which are bodies of the EU established as juridical persons through secondary legislation,
• other bodies of the EU established through secondary legislation, which lack juridical personality (e.g. European Data Protection Supervisor)
• the inter-institutional services

Apart from them, some several other bodies exist.

The Treaty on European Union in Article 13 lists seven institutions of the European Union, including one which is an international entity (the European Central Bank).

Logo	Name	TEU	Seat	Members	Chairman
	The European Parliament	1	Brussels & Strasbourg	705 MEPs	Roberta Metsola
	The European Council	2	Brussels	27 Heads of State or Government of the Member States and the President of the Commission	Charles Michel
	The Council of the European Union	3	Brussels	27 ministers	Biannual rotation
	The European Commission	4	Brussels	27 commissioners	Ursula von der Leyen
	The Court of Justice of the European Union	5	Luxembourg	27 judges, 11 Advocate-Generals	Koen Lenaerts
	The European Central Bank	6	Frankfurt am Main		Christine Lagarde
	The European Court of Auditors	7	Luxembourg	27 members, 1 president	Klaus-Heiner Lehne

In addition, the European Investment Bank is the European Union's long-term lending institution. The EIB supports the EU's priority objectives, especially boosting sustainable growth and job creation. The Group also includes the European Investment Fund and the EIB Institute.^[1]

There are a number of other bodies and agencies of note that are not formal institutions. There are two consultative committees to the EU institutions: the Economic and Social Committee (EESC) advises on economic and social policy (principally relations between workers and employers) being made up of representatives of various industries and work sectors. Its 344 members (with an additional nine members joining following the accession of Croatia to the EU), appointed by the council for four-year terms, are organised into three fairly equal groups representing employers, employees and other various interests;^[2] while the European Committee of the Regions (CoR) is composed of representative of regional and local authorities who hold an electoral mandate. It advises on regional issues. It has 344 members, organised in political groups, appointed every four years by the council.^[3]

The European Ombudsman deals with citizens grievances against the Union's institutions and is elected for five-year terms by the Parliament.

A number of decentralised, executive and Eurarom agencies, decentralised independent bodies and joint undertakings exist, which are bodies of the EU or Euratom established as juridical persons through secondary EU legislation. These include the European Environment Agency and Europol.^[4]

There are also three inter-institutional bodies lacking juridical personality: the Publications Office, the oldest one, which publishes and distributes official publications from the European Union bodies;^[5] and the two relatively new: the European Personnel Selection Office (EPSO), a recruitment body which organises competitions for posts within Union institutions;^[6] and the European Administrative School, which provides specific training for the staff of Union institutions.^[7]

Another body is the anti-fraud office OLAF whose mission is to protect the financial interests of the European Union.^[8]

The European Data Protection Supervisor ensures the institutions respect citizens' privacy rights in relation to data processing.^[9]

Established by Regulation 1141/2014, the Authority for European Political Parties and European Political Foundations (APPF) is in charge of registering, controlling and imposing sanctions on European political parties and European political foundations.^[10]

• Glossary of European Union concepts, acronyms, and jargon
• List of the names of bodies of the European Union in its official languages