Cornelius MacGillicuddy (died November 1712) was an Irish Jacobite politician.
In 1688 he was granted a commission as a captain in Lord Slane's Regiment of Foot.
MacGillicuddy was elected as a Member of Parliament for Ardfert in the short-lived Patriot Parliament summoned by James II of England in 1689.
[1] Despite his Jacobitism, he was included in the pardon afforded by the Articles of Limerick and in 1694 he took an oath of allegiance to William III of England.
He experienced great financial difficulties, and in 1698 he mortgaged his entire property to David Crosbie of Ardfert.