Thomas Butler (died after 1496) was an Irish judge, who held the office of Irish Master of the Rolls.
He was a cousin of John Butler, 6th Earl of Ormonde. The Butlers had backed the losing side in the Wars of the Roses and Ormonde's brother James Butler, 5th Earl of Ormonde had been attainted for treason as a result, but the 6th Earl was quickly pardoned by the new King Edward IV, who greatly admired him. Ormonde may have recommended his cousin as a royal servant: in 1478 Butler was groom of the King's chamber, while his wife Agnes was described as "former nurse to the royal children". He was also bailiff of the manors of Solihull and Yardley.
In 1492 he was sent back to Ireland as Master of the Rolls in Ireland. It is unclear what legal qualifications, if any, he had (the Master of the Rolls at that time was not always a qualified lawyer, as his duties were primarily administrative). His appointment was part of a campaign by the new Tudor dynasty to curb the power of the Anglo-Irish gentry, which included nearly all the judges, who had openly backed the pretender Lambert Simnel and were now suspected of aiding another pretender, Perkin Warbeck. Gerald FitzGerald, 8th Earl of Kildare, who had once been all-powerful in Ireland, was disgraced and between 1492 and 1494 those judges who were regarded as his creatures were removed.
From 1496 on Kildare gradually regained much of his influence, and Butler was removed from the Mastership of the Rolls in that year. His date of death is not recorded.