Sir Thomas Thynne (c.1610 – 1669) was an English lawyer and politician who sat in the House of Commons in 1660.
He was knighted on 19 August 1642 but appears to have taken no part in the English Civil War; in 1646 he was assessed at £4,000 by the committee for the advance of money, but no proceedings were taken.
His house at Richmond, Surrey was searched for royalist suspects in 1659 and his steward and butler were ordered to be arrested.
[2] Thynne may have died aged 59 soon after 14 October 1669, when he dictated a codicil to his will which he was unable to sign.
The elder Thomas pre-deceased his elder brother Sir James Thynne from whom his son Thomas inherited the vast estate at Longleat, but who was assassinated in 1682, while in his coach in Pall Mall.