Caleb Pusey, formally Caleb Bartholomew alias Pusey, (c. 1650–1727) was a Quaker lastmaker (a maker of wooden foot molds for cobblers) and a friend and business partner of William Penn, the founder of the colony of Pennsylvania. Pusey came to the colony from England in 1682, having been born in the parish of Lambourn, to manage Chester Mills for Penn. Situated on Chester Creek west of Philadelphia, they were the first Proprietary grist mill and sawmill in the colony. From 1701, Pusey served as a justice of the provincial supreme court. Pusey became involved with the local Quaker community, as well as local government. He wrote a number of pamphlets, several in defense of William Penn.