Thomas Belasyse, 1st Earl Fauconberg PC was an English peer. He supported the Parliamentary cause in the English Civil War, becoming close to Oliver Cromwell and marrying Cromwell's third daughter, Mary. After the Restoration of the monarchy he became a member of the Privy Council to Charles II and was elevated to an earldom by William III.

The Honourable Henry Belasyse, or Bellasis, May 1604 to May 1647, was an English politician from Yorkshire who sat in the House of Commons of England variously between 1625 and 1642.