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.

The Alliance of Liberals and Democrats for Europe Party is a European political party composed of 76 national-level parties from across Europe, mainly active in the European Union. The ALDE Party is affiliated with Liberal International and a recognised European political party, incorporated as a non-profit association under Belgian law.