James Barry, 1st Baron Barry of Santry PC (Ire) (1603–1673) was an Irish lawyer, judge and peer.
Barry was the son of Richard Barry and Anne Cusack, daughter of James Cusack of Rathgar. His father and grandfather were wealthy merchants of Dublin, his grandfather James Barry having been Sheriff of Dublin City, and his father Lord Mayor of Dublin and representative in the Irish House of Commons for Dublin. He married Catharine Parsons (daughter of Sir William Parsons and Elizabeth Lany), by whom he had four sons and four daughters. His favourite sister Anne married James Donnellan, later Chief Justice of the Irish Common Pleas, but died young: her brother and her husband remained close throughout their lives.
He graduated from Trinity College, Dublin, Ireland, on 27 April 1621 with a Bachelor of Arts (B.A.). He gained a Master of Arts (M.A.) from Trinity College, Dublin, in June 1624.
He was admitted to Lincoln's Inn on 11 July 1621. In 1628 he served as a barrister, and he was Recorder of Dublin. Other appointments included Prime Sergeant, 6 October 1629. He was admitted to King's Inn, 15 April 1630, (he served twice as its Treasurer) and was Member of Parliament for Lismore in 1634.