Cecil is a surname of Welsh origin. Notable people with the surname include:
Brett Cecil (born 1986), Canadian baseball pitcherChuck Cecil (born 1964), American football playerEdward Cecil, 1st Viscount Wimbledon (1572–1638), English political and military leaderEdward Cecil (disambiguation)Henry Cecil (disambiguation)Lord David Cecil (1902–1986), British biographer, historian and academicRobert Cecil (disambiguation)Robert Gascoyne-Cecil (disambiguation), several peopleMalcolm Cecil (born 1937), British jazz bassist and Grammy Award-winning record producerRex Cecil (1916–1966), American baseball pitcher 1944–1945William Cecil, 1st Baron Burghley or Lord Burghley (1520–1598), English statesman, the chief advisor of Queen Elizabeth I