William Coddington (c. 1601 – 1 November 1678) was an early magistrate of the Massachusetts Bay Colony and later of the Colony of Rhode Island and Providence Plantations. He served as the judge of Portsmouth and Newport, governor of Portsmouth and Newport, deputy governor of the four-town colony, and then governor of the entire colony. Coddington was born and raised in Lincolnshire, England. He accompanied the Winthrop Fleet on its voyage to New England in 1630, becoming an early leader in Boston. There he built the first brick house and became heavily involved in the local government as an assistant magistrate, treasurer, and deputy.