Dunmurry Cross was one of the district electoral areas in Lisburn, Northern Ireland which existed from 1985 to 2014. It was one of four Lisburn DEAs until 1993, and one of five until 2014. The district elected seven members to Lisburn City Council and formed part of Belfast West constituencies for the Northern Ireland Assembly and UK Parliament and part of the Lagan Valley constituencies for the Northern Ireland Assembly and UK Parliament.
It was created for the 1985 local elections, replacing Lisburn Area D and Lisburn Area E which had existed since 1973, and contained the wards of Collin Glen, Derryaghy, Dunmurry, Kilwee, Lambeg, Seymour Hill and Twinbrook. For the 1993 local elections, Lambeg moved to the new Lisburn North DEA, while a new Poleglass ward was created within the DEA. It was abolished for the 2014 local elections with Derryaghy also moving to Lisburn North DEA and the rest of the area was transferred to the new Collin DEA for the 2014 Belfast City Council election.