Cecil Calvert, 2nd Baron Baltimore (8 August 1605 – 30 November 1675) was an English politician and lawyer who was the first proprietor of Maryland. Born in Kent, England in 1605, he inherited the proprietorship of overseas colonies in Avalon (Newfoundland) along with Maryland after the 1632 death of his father, George Calvert, 1st Baron Baltimore (1580–1632), for whom it had been originally intended in a vast land grant from King Charles I (1600–1649, reigned 1625–1649). Young Calvert proceeded to establish and manage the Province of Maryland as a proprietary colony for English Catholics from his English country house of Kiplin Hall in North Yorkshire.
As a Catholic, he continued his father's legacy by promoting religious tolerance in the colony.