Thomas Merry (c. 1605 - 1682) was an English landowner, mathematician and politician who sat in the House of Commons in 1660.
His father was clerk-comptroller of the green cloth who received large grants of crown lands from James I which were plundered during the Civil War for his Royalist support.
He was an active member of the Green Ribbon Club and a close friend of Titus Oates, whom he visited in his chambers at Whitehall.
[1] Merry died at Westminster, aged about 76 and was buried lies in the vault of his grandfather at Walthamstow.
John Aubrey described him in October 1682 after his death as "a great algebraist and a great Whig" and noted that "it was a pity his papers were lost, for ‘he had done all Euclid in a shorter and clearer manner than ever was yet done, and particularly the tenth book.