The Hamlyn, later Hamlyn-Williams Baronetcy, of Clovelly Court in the County of Devon and of Edwinsford in the County of Carmarthen, was a title in the Baronetage of Great Britain. It was created on 7 July 1795 for James Hamlyn, heir of his great-uncle Zachary Hamlyn (1677–1759) of Clovelly. He married Arabella Williams, daughter and eventual heiress of Thomas Williams (d.1792) of Edwinsford, Llandeilo, in Carmarthenshire, himself the heir of his elder brother Sir Nicholas Williams, 1st Baronet (1681–1745) of Edwinsford. He was Member of Parliament for Carmarthenshire from 1793 to 1802.