Thomas Darcy, 1st Baron Darcy of Darcy or of Temple Hurst, was an English nobleman, the only son, and heir, of Sir William Darcy and his wife, Euphemia Langton, the daughter of Sir John Langton. Darcy was opposed to the Dissolution of the Monasteries, and for his role in the Pilgrimage of Grace was convicted of high treason for delivering up Pontefract Castle to the rebels. He was executed on Tower Hill 30 June 1537.

The Pilgrimage of Grace was a popular revolt beginning in Yorkshire in October 1536, before spreading to other parts of Northern England including Cumberland, Northumberland, Durham and north Lancashire, under the leadership of Robert Aske. The "most serious of all Tudor period rebellions", it was a protest against Henry VIII's break with the Catholic Church, the dissolution of the lesser monasteries, and the policies of the King's chief minister, Thomas Cromwell, as well as other specific political, social, and economic grievances.