Arthur Marcus Cecil Sandys, 3rd Baron Sandys (28 January 1798 – 10 April 1863), known as Lord Marcus Hill until 1860, was a British Whig politician. Lea & Perrins has claimed that Sandys encountered a precursor to Worcestershire sauce while in India with the East India Company in the 1830s, and commissioned the local apothecaries to recreate it, eventually leading to its popularity in England.