Robert Bowyer (ca. 1560–1621) was an English politician who sat in the House of Commons at various times between 1601 and 1610. He served as Keeper of the Records in the Tower of London early in the reign of James I of England and was named to the office of Clerk of the Parliaments in 1610. He is notable for his Diary, which records much of the detailed proceedings of Parliament between 1605 and 1607