The Amounderness Hundred (/əˈmʌndərnəs/) is one of the six subdivisions of the historic county of Lancashire in North West England, but the name is older than the system of hundreds first recorded in the 13th century and might best be described as the name of a Norse wapentake. In the Domesday Book, it was used for some territories north of the River Ribble included together with parts of Yorkshire. The area eventually became part of Lancashire, sitting geographically between the Rivers Lune and Ribble, in the strip of coast between the Irish Sea and Bowland Forest.