Patrick O'Shea (c.1900 - 18 April 1923) was a farm labourer and IRA soldier who fought on the anti-Treaty side during the Irish Civil War in north Kerry.
Post-Treaty, he was part of "Aero" Lyons's flying column that operated around Ballyduff (on different historical documentation he is recorded as having commenced IRA activities either from 1917, 1920 or 1921).
O'Shea and his colleagues entered Dumfort's Cave set into the Atlantic cliff, a hiding place with one entrance and no means of escape.
Two National troops were shot by Lyons as they tried to access the cave, one dying at the scene and another, Captain Henry Pearson, succumbing to his injuries in Tralee hospital.
The siege ended after Lyons agreed to surrender but fell from a rope provided by troops onto rocks and was riddled with bullets where he lay.