Aontú is an all-Ireland political party that was formally launched in January 2019, and operates in both the Republic of Ireland and Northern Ireland. Ideologically, Aontú is opposed to abortion and combines elements of social conservatism with advocacy for a united Ireland and centre-left economics. It has been led by Peadar Tóibín since its foundation.

The 2019 election to the Derry City and Strabane District Council, part of the Northern Ireland local elections on 2 May 2019, returned 40 members to the council via Single Transferable Vote.