Cilley is a surname. Notable people with the surname include:
Bradbury Cilley (1760–1831), United States Representative from New Hampshire Clinton A. Cilley (1837–1900), North Carolina lawyer and judge, and a recipient of the Medal of Honor Jacalyn Cilley, Democratic member of the New Hampshire Senate, representing the 6th District since 2006 Jonathan Cilley (1802–1838), member of the U.S. House of Representatives from Maine Jorge Cilley (1914–1960), Argentine rugby union player José Cilley (born 1972), Argentine rugby union player Joseph Cilley (senator) (1791–1887), United States Senator from New Hampshire Joseph Cilley (state senator) (1734–1799), New Hampshire state senator and general Juan Cilley (1898–1954), Argentine footballer Noble Cilley Powell, also known as Noble C. Powell, (1891–1968), leader in the Episcopal Church in the USA
See also Cilley Hall, dormitory at Phillips Exeter Academy in Exeter, New Hampshire, United States, named after Bradbury Cilley Vanesa Siley (born 1984), Argentine politician Chilly (disambiguation) Scilly Sillery (disambiguation)