Thomas McGrath (9 January 1903 - 18 April 1923) was an IRA soldier who fought on the anti-Treaty side in the Irish Civil War in north Kerry.
He was born at home to Mary (née Walsh) and Peter McGrath and lived at 13 Clashmealcon (Irish: Clais Maolchon), County Kerry.
He fought in "Aeroplane" Lyons's flying column, which was based around Causeway and was involved in the robbery of the Ballyduff post office and the burning of a Civic Guard station at Ballyheigue.
Lyons, who had fired at the troops' lights, shot two National soldiers who tried to enter the cave - one was killed at the spot and another died later in Tralee hospital.
On the night of 17–18 April, McGrath, with his colleague and first cousin Patrick O'Shea, made a futile attempt to escape by climbing the cliff.