Sibley is an English surname. Notable people with the surname include:
Andrew Sibley (1933-2015), Australian artist
Alexander H. Sibley (1817–1878), Canadian businessman
Antoinette Sibley (born 1939), English ballerina
Brian Sibley (born 1949), British writer and broadcaster
Celestine Sibley (1914–1999), writer
Charles Sibley (1917–1998), American ornithologist and molecular biologist
Cyril William Sibley (1923–1945), British airman (RAF), murdered by a German Nazi
David Allen Sibley (born 1962), American ornithologist and author
David Sibley (politician) (born 1948), Texas politician and lobbyist
Denyse Sibley (born 1962), popular Canadian radio host and entertainer
Frank Sibley (philosopher) (1923–1996), British analytic philosopher and aesthetician
George Champlin Sibley, American explorer, soldier, Indian agent
Henry Hastings Sibley (1811–1891), first Governor of Minnesota
Henry Hopkins Sibley (1816–1886), Confederate general
Hiram Sibley (1807–1888), entrepreneur
Irena Sibley (1944–2009), artist, children's book author and illustrator
John Langdon Sibley {1804-1885} Librarian and Historian Harvard University
Marilyn McAdams Sibley (1921–2006), American historian
Mulford Q. Sibley (1912–1989), American political scientist
Solomon Sibley (1769–1846), Delegate to Congress and Supreme Court Justice for Michigan Territory
