Sir Timothy Turner SL JP (11 July 1585 – January 1677) was an English judge.
Turner was the eldest son of the Shropshire barrister Thomas Turner. He was a member of Staple Inn and then joined Gray's Inn on 8 March 1607, being called to the bar on 30 October 1611. In the contemporary debates between Sir Edward Coke and Lord Chancellor Ellesmere, Turner's notebooks reveal him to have felt a strong reaction against Ellesmere's claims for the royal prerogative as "transcendent to the common law".
His initial practice was centered on Ludlow, the legal center of Wales and the Marches, but he was of little note officially until 1626, when he became a justice of the peace for Shropshire, through the influence either of Sir Thomas Coventry, or Ellesmere's son and heir the Earl of Bridgewater. (Turner's second wife was the widow of Bridgewater's late solicitor.)
A commissioner in Shropshire for the forced loan of 1626, Turner was subsequently king's solicitor before the Council of the Marches from 1627 to 1637, and a master in chancery extraordinary from 1630. He became a bencher of Gray's Inn in 1632. His first judicial appointment came in 1634, when he was made puisne judge for the North Wales circuit, and in 1637, became chief justice of South Wales. He became recorder of Shrewsbury in 1638.