Mark Daly (born 12 March 1973) is an Irish Fianna Fáil politician who has served as Cathaoirleach of Seanad Éireann since February 2025.

On 30 May 2010, he was one of three Irish politicians who were prevented by authorities from leaving Cyprus to join an international flotilla carrying aid to the besieged Gaza Strip.

[8] Alex White, Minister of State at the Department of Health, told the chamber that no case had been made of any strength why the legislation should be annulled.

[8] In 2018 Daly travelled with Eamon O Cuiv to Omagh to endorse the campaign of Independent and former Sinn Féin Cllr Sorcha McAnespy who had joined the Fianna Fáil party and who sought to contest the 2019 Fermanagh and Omagh District Council election for the party as an approved candidate.

Party President Micheal Martin and Party HQ in Mount Street vehemently opposed this initiative about contesting elections in Northern Ireland and summarily sacked Daly from his position as Deputy Leader in the Seanad as a result.