Democratic Party of Unity (Montenegrin: Демократска странка јединства, Demokratska stranka jedinstva, DSJ) was a minor extra-parliamentary national conservative Serbian-Montenegrin unionist political party in Montenegro.

Between 2006 and 2009, the party was a constituent member of the Serb List (Srpska lista) coalition.

In 2012 and from 2015 until 2017, the DSJ was a constituent member of the opposition right-wing Democratic Front (DF) alliance.

The party supported the For the Future of Montenegro (ZBCG) list for the 2020 parliamentary election.

[2] In February 2020, the party merged into the newly formed Popular Movement (Montenegro).