The Honourable William Townshend (9 June 1702 – 29 January 1738) was a British Member of Parliament. Townshend was the third son of Charles Townshend, 2nd Viscount Townshend, and his first wife the Hon. Elizabeth Pelham. Charles Townshend, 3rd Viscount Townshend, Thomas Townshend and Roger Townshend were his brothers and George Townshend, 1st Marquess Townshend, and Charles Townshend his nephews. He was elected to the House of Commons for Great Yarmouth in 1723, a seat he held until his death. He lived at Honingham Hall in Norfolk.