William Corbet (17 August 1779 – 12 August 1842) was an Irish soldier. He was born in Ballythomas, County Cork. In 1798, as a member of the United Irishmen, he was expelled from Trinity College Dublin with Robert Emmet and others for treasonable activities, and went instead to Paris. In September of the same year, he joined a French military force under Napper Tandy with the rank of Captain and sailed from Dunkirk with arms and ammunition for Ireland. The expedition had to turn back following the defeat of General Humbert and arriving in Hamburg they were handed over to the British authorities and taken to Ireland, where they were imprisoned in Kilmainham Jail.