Thomas Venner (died 19 January 1661) was a cooper and rebel who became the last leader of the Fifth Monarchy Men, who tried unsuccessfully to overthrow Oliver Cromwell in 1657, and subsequently led a coup in London against the newly restored government of Charles II. This event, known as "Venner's Rising", lasted four days (1–4 January 1661) before the Royal authorities captured the rebels. The rebel leadership suffered execution on 19 January 1661.