Sir Robert Salusbury Cotton, 3rd Baronet (2 January 1695 – 27 August 1748) was an English politician who was Member of Parliament (MP) for Cheshire from 1727 to 1734 and for Lostwithiel from 1741 to 1747.[1][2] He married Elizabeth Tollemache (died 6 August 1746), the daughter of Lionel Tollemache, 3rd Earl of Dysart and his wife Grace Wilbraham.[3]