John Barker was an English draper and politician who sat in the House of Commons between 1640 and 1653. He supported the Parliamentary side in the English Civil War. Barker was a draper of Coventry and was mayor of Coventry in 1634 and an alderman from 1635. At the end of the protectorate, the Rump Parliament was recalled in May 1659, but Barker was refused readmission.