Sidney
- Fort Sidney
- Sidnei (disambiguation)
- Sidney (film)
- Sidney (footballer, born 1972)
- Sidney (footballer, born 1979)
- Sidney (given name)
- Sidney (novel)
- Sidney (surname)
- Sidney (village), New York
- Sidney Township (disambiguation)
- Sidney, Arkansas
- Sidney, British Columbia
- Sidney, Illinois
- Sidney, Indiana
- Sidney, Iowa
- Sidney, Kentucky
- Sidney, Maine
- Sidney, Manitoba
- Sidney, Missouri
- Sidney, Montana
- Sidney, Nebraska
- Sidney, New Jersey
- Sidney, New York
- Sidney, Ohio
- Sidney, Texas
- Sidney, West Virginia
- Sidney, Wisconsin
- Sydnee (disambiguation)
- Sydney (disambiguation)
- Sídney (footballer, born 1963)