Sir William Savile, 3rd Baronet of Thornhill (1612 – 24 January 1644) was an English politician who sat in the House of Commons between 1640 and 1642.

Included in the family estates were the residences of Thornhill Hall, Rufford Abbey, and a house in York.

Wentworth selected him to be Deputy Lieutenant of the West Riding in 1633, and he was appointed to the council in the north in July 1636.

[3] In parliament, he spoke against ship money and signed the petition against forced billeting, but he remained loyal to the king.

Against her orders, the garrison eventually surrendered the crumbling castle and she gave birth the same night on 11 August 1644.