Thomas Nugent, 4th Earl of Westmeath (1669 - 30 June 1752) was an Irish soldier and peer.
He was the second son of Christopher Nugent, Lord Delvin and Mary Butler, daughter of Colonel Richard Butler.
He was likely the resident of Coolamber Hall House.
Nugent served in the Irish army of James II as a Colonel of Foot, being outlawed by William III on 11 May 1691.
He was married to Margaret Bellew, a daughter of John Bellew, 1st Baron Bellew of Duleek, and Mary Bermingham, with whom he had issue: Nugent was succeeded by his younger brother, John Nugent, 5th Earl of Westmeath.