All European Academies (ALLEA) is the European Federation of Academies of Sciences and Humanities. It was founded in 1994, and brings together 60 Academies of Sciences and Learned Societies from over 40 member countries of the Council of Europe. Since June 2024, the President of ALLEA is Paweł Rowiński. ALLEA is financed by annual dues from its member academies and remains fully independent from political, religious, commercial or ideological interests. The ALLEA secretariat is based on the premises of the Berlin-Brandenburg Academy of Sciences and Humanities in Berlin.

The organization comprises academies from the European Union (EU) and non–EU member states in Europe, in the humanities, social sciences, and natural and life sciences:

ALLEA working groups advise on matters related to science, science management and science policy on the European level.

ALLEA, jointly with four other European academy networks, forms part of the EU-funded SAPEA (Science Advice for Policy by European Academies) project, with fellows from over 100 Academies across Europe. SAPEA advises on policy issues to the European Commission and the European public in the context of the European Commission's Scientific Advice Mechanism.