Democrats 66

Democrats 66 (Dutch: Democraten 66; D66) is a social-liberal and progressive political party in the Netherlands, which is positioned on the centre to centre-left of the political spectrum. It is a member of the Liberal International (LI) and the Alliance of Liberals and Democrats for Europe (ALDE). The party is led by Rob Jetten, who was elected party leader on 12 August 2023. Paul van Meenen, Jan Paternotte and Gerben-Jan Gerbrandy are serving as the party's parliamentary leaders in the Senate, the House of Representatives and the European Parliament respectively.

Its name refers to its year of foundation, 1966. Initially, its main objective had been to democratise the Dutch political system, but it developed a broader social liberal ideology over time. D66 is especially popular among people who hold a university degree, and its voters are mostly concentrated in larger cities and in municipalities with an above-average number of wealthy residents. The party supplies a relatively large proportion of mayors, who are appointed rather than elected.