William Henry Granville, 3rd Earl of Bath (30 January 1692 – 17 May 1711) was an English nobleman.
He was the only son of Charles Granville, 2nd Earl of Bath, by his second wife Isabella de Nassau d'Auverquerque, sister of Henry de Nassau d'Auverquerque, 1st Earl of Grantham.
He was styled Viscount Lansdown from August to September 1701, when he succeeded in the earldom after his father committed suicide, allegedly because of the debts he had inherited.
Lord Bath died of smallpox in May 1711, aged 19, when the earldom became extinct.[1]