Sibley may refer to:
- Sibley (surname)
- Sibley (automobile)
Places and landmarks
In Canada:
- Sibley Peninsula, Ontario (on Lake Superior)
In the United States:
- Sibley, Illinois
- Sibley, Iowa
- Sibley, Kansas
- Sibley, Louisiana
- Sibley, Mississippi
- Sibley, Missouri
- Sibley, North Dakota
- Sibley County, Minnesota
- Sibley Memorial Hospital, in Washington, D.C.
- Robert Sibley Volcanic Regional Preserve, in California
- Sibley Park
Other
- Sibley–Ahlquist taxonomy of birds, a phenetic DNA-based taxonomy of birds
- Sibley's, a former New York state department store chain
- Sibley's Shoes, a former Michigan retail footwear chain
- Sibley fire, a 1904 New York disaster