Thomas Barker (15 November 1798 – 2 March 1877) was an English professional cricketer, who played first-class cricket from 1826 to 1845. He was a right-handed batsman and a roundarm fast bowler. He became an umpire when his playing career ended. In 1843, Barker was badly injured in an accident involving a horse-drawn cab in London. As a result, he had to stop playing in 1845 and was engaged by the MCC as an umpire. He stood in 70 first-class matches until 1865. During the winter months, he worked in Nottingham as a stockinger. He died in Nottingham, aged 78.