George Mason-Villiers, 2nd Earl Grandison PC (13 July 1751 – 14 July 1800), styled Viscount Villiers between 1767 and 1782, was a British peer from the Villiers family and politician who sat in the House of Commons from 1774 to 1780.
His father who represented County Waterford in the Irish House of Commons died in March 1759 and his mother re-married to Major-General Charles Montague Halifax in 1763.
He took name of Villiers on 21 October 1771 and married Lady Gertrude, daughter of Francis Seymour-Conway, 1st Marquess of Hertford on 10 February 1772.
Towards the end of the parliament he went abroad with his family, presumably to Switzerland where his mother lived and declined to stand in 1780.
Lord Grandison survived her by seven years and died in July 1800, aged 49.