Adrian McQuillan, (8 June 1965, Ballymoney) is a former Northern Irish unionist politician who was a Causeway Coast and Glens Councillor for the Bann DEA from 2019 to 2023.

He previously served as a Democratic Unionist Party (DUP) Member of the Northern Ireland Assembly (MLA) for East Londonderry from 2007 to 2017 McQuillan is a joiner by training, and was a postman for 18 years.

[1] He was the only Democratic Unionist Party (DUP) councillor to be returned in that district, following Robert Bolton's unsuccessful candidacy as an independent.

In January 2023, after falling out with the DUP leadership over bullying allegations, he resigned from the party to sit as an Independent.

He stood for re-election in the local elections that same year, but was unsuccessful.