Sir Thomas Burnett of Leys, 3rd Baronet, (ca. 1658 – January 1714), Lord Clerk Register, PC, MP. He was, at Stonehaven, 21 April 1664, retoured as heir to his father, Sir Alexander Burnett, 2nd Baronet who had died the previous year. The 3rd Baronet is the grandson of Sir Thomas Burnett, 1st Baronet, who completed the reconstruction of Muchalls Castle and the great-grandson of Alexander Burnett of Leys (died 1619), who completed the construction of Crathes Castle.