Mary Butler (born 29 September 1966) is an Irish Fianna Fáil politician who has served as Government Chief Whip since January 2025, and Minister of State at the Department of Health since July 2020.

She previously served as chair of the Committee on Jobs, Enterprise and Innovation from 2016 to 2020.

[1][2] She was the Fianna Fáil junior spokesperson for Older People and Chair of Oireachtas Cross Party group on Dementia.

[9] Kenneally's canvassing for Mary Butler in 2020 became public knowledge when it emerged that he had visited the homes of some of those who had been abused to seek their votes.

[9] It also emerged that Butler was renting her constituency office from Kenneally, and when it did so, she stated in an interview that she would move elsewhere and did so in early 2020.