Harrow on the Hill or Harrow-on-the-Hill is a locality and historic village in the borough of Harrow in Greater London, England. The name refers to Harrow Hill, 408 feet, and is located some half a mile south of the modern town of Harrow. The village dates back to early medieval times, built around the 11th-century St Mary's Church, and is the location of Harrow, St Dominic's and John Lyon schools.