Henry Aloysius McDevitt (1904 – 4 January 1966) was an Irish Fianna Fáil politician and barrister. He was elected, at his second attempt, to Dáil Éireann as a Teachta Dála (TD) for the Donegal East constituency at the 1938 general election. He did not contest the 1943 general election. McDevitt's grandson is Mark Reckless a former MP for Rochester and Strood (2010–2015), and a former Member of the Senedd for South Wales East (2016-2021).