Onley may refer to:
Onley, Virginia, a town in Accomack County, Virginia, United States Onley (lost settlement), a lost village in Northamptonshire, England Onley (HM Prison), a Category C men's prison in Warwickshire, England David Onley, Canadian journalist, lieutenant governor of Ontario Oscar Onley (born 2002), Scottish cyclist
See also Only (disambiguation) Olney (disambiguation)