The Bishop of Grantham is an episcopal title used by a suffragan bishop of the Church of England Diocese of Lincoln, in the Province of Canterbury, England. The title takes its name after the market town of Grantham in Lincolnshire. The bishop had episcopal oversight for the southern part of the diocese.
Nicholas Chamberlain was consecrated Bishop of Grantham on 19 November 2015. In 2016, Chamberlain announced he is gay and in a partnership becoming the first bishop so to do in the Church of England.