Daithí Gerard McKay (born 1982, Ballymena, County Antrim, Northern Ireland) is an Irish newspaper columnist and former Sinn Fein politician.

He brought forward legislation that led to the introduction of a Carrier Bag Levy in Northern Ireland and the abolishment of rates for Community Amateur Sport Clubs.

The DUP Environment Minister, Arlene Foster, had said that she was 'minded' to approve an application from Sweeney for a private visitor centre at the Giant's Causeway, even though her Planning Service officials had recommended that it be refused.

He had raised the matter through a Private Members Debate previously and is believed to be responsible for Sinn Féin ensuring that the levy was included in the Executive's Budget in 2010.

[18] After McKay made a presentation to the commission with members of the Rasharkin Residents Association the band were barred from participating in the Ballymaconnelly parade.

In his first article he called on mainly nationalist councils to introduce the flying of the tricolour from government buildings in the north for the first time by adopting a flags policy of equality rather than neutrality.

[23] A suggestion he has put forward for discussion is that a hybrid model of a weighted majority system retaining some cross-community safeguards would help address political 'gridlock'.

[24] In 2022 he said that the Secretary of State had a responsibility to outline publicly how an Irish unity referendum "might be triggered" given rising levels of support for a border poll.