Máirtín Ó Muilleoir (born 31 December 1959[1]) is an Irish Sinn Féin politician, author, publisher, and businessman, who served as the 70th Lord Mayor of Belfast from 2013 to 2014.

[4] In 1997, Ó Muilleoir became part-owner of the Andersonstown News, which subsequently purchased the New York-based Irish Echo.

[5] Ó Muilleoir entered politics in 1985, when he stood as a Sinn Féin candidate for the Upper Falls area and narrowly missed out on being elected.

[7] He re-entered politics in 2011, when he was elected as a Belfast City Councillor for Balmoral, South Belfast, gaining the seat previously held by Jim Kirkpatrick of the Democratic Unionist Party, and was elected Lord Mayor in 2013, serving a one-year term.

[9] He stood in Belfast South in the 2015 United Kingdom general election, losing to the Social Democratic and Labour Party incumbent, Alasdair McDonnell.