Sir Barry Denny, 1st Baronet (c. 1744 – April 1794) was an Anglo-Irish politician.
The Denny family effectively owned the town of Tralee.
He served in the Tralee Corps of the Irish Volunteers, becoming a colonel.
He was elected to the Irish House of Commons as the Member of Parliament for County Kerry, representing the seat between 1769 and 1776, and again between 1783 and 1794.
He was created a baronet, of Castle Moyle in the Baronetage of Ireland on 12 January 1782.