Michael Leo Hilliard (11 March 1903 – 3 August 1982) was an Irish Fianna Fáil politician. He was born 11 March 1903 in Navan, County Meath, fifth child of James Hilliard, a farmer and cattle dealer, and Mary Hilliard (née O'Brien). He was educated at St Finian's College, Mullingar, he left in 1920 to take part in the IRA's independence campaign. A company captain in 4th Battalion, 2nd Meath Brigade, in 1920 he was involved in enforcing the Belfast boycott and in April 1921 was promoted to brigade intelligence officer Hillard fought on the side of the Anti-Treaty IRA during the Irish Civil War.