The Synod of Dort was a European transnational Synod held in Dordrecht in 1618–1619, by the Dutch Reformed Church, to settle a divisive controversy caused by the rise of Arminianism. The first meeting was on 13 November 1618 and the final meeting, the 180th, was on 29 May 1619. Voting representatives from eight foreign Reformed churches were also invited. Dort was a contemporary Dutch term for the town of Dordrecht.

A synod is a council of a Christian denomination, usually convened to decide an issue of doctrine, administration or application. The word synod comes from the Ancient Greek σύνοδος 'assembly, meeting'; the term is analogous with the Latin word concilium 'council'. Originally, synods were meetings of bishops, and the word is still used in that sense in Catholicism, Oriental Orthodoxy and Eastern Orthodoxy. In modern usage, the word often refers to the governing body of a particular church, whether its members are meeting or not. It is also sometimes used to refer to a church that is governed by a synod.