Sir Gregory Byrne, 1st Baronet (c.1640 – March 1712) was an Irish Jacobite soldier and politician.
On 17 May 1671 he was created a baronet, of Nether Tabley in the Baronetage of England, after his father purchased the title.
[2] An adherent of James II of England following the Glorious Revolution, he was appointed High Sheriff of Queen's County in 1689.
On 23 January 1693, Byrne appears on the list of Roman Catholic officers pardoned by William III of England on 17 December 1692.
In 1693 he was arrested and briefly detained in Dublin during a French invasion scare but later in the year he was included in the conditional release of Irish officers, and finally pardoned in 1694 under the terms of the Treaty of Limerick.