William Elliot of Wells (1701–1764) was an army officer, courtier, and Member of Parliament during the reign of George II.

His eldest sister's son, George Augustus Eliott (later Lord Heathfield, defender of Gibraltar), was one of his subordinate officers in the 2nd Troop of Horse Grenadier Guards.

In 1741, Elliot was elected as a Whig Member of Parliament (MP) for Calne, Wiltshire (which seat he held until 1754).

Elliot married – against her father's wishes – Lady Frances de Nassau d’Auverquerque, elder daughter of the Earl of Grantham and Lady Henrietta Butler, daughter of the Earl of Ossory, at St Benet Paul's Wharf, London, on 4 June 1737, with one son: In 1758, Lady Frances would have inherited the Scottish title lordship of Dingwall upon the death of her uncle the Earl of Arran, had this title not been forfeited as a consequence of the 1715 attainder of her uncle the Duke of Ormonde following his involvement in the Jacobite risings of that year.

[1] William Elliot died on 7 June 1764 and was buried in St James's Church, Piccadilly, Westminster.