An English and Scottish surname transferred from the given name derived from the given name Alan. • A male given name from the Celtic languages, a variant of Alan; in modern use often transferred from the surname. • A number of places in the United States: • A ghost town in Pima County, Arizona. • An unincorporated community in Allen County, Indiana. • A minor city in Lyon County, Kansas. • A minor city in Floyd County, Kentucky. • An unincorporated community in Natchitoches Parish, Louisiana. • An unincorporated community and census-designated place in Wicomico County, Maryland. • A village in Hillsdale County, Michigan. • An unincorporated community in Quitman County, Mississippi. • A village in Dixon County, Nebraska. • A town in Allegany County, New York. • A town in Hughes County and Pontotoc County, Oklahoma. • A census-designated place in Bennett County, South Dakota. • A city in Collin County, Texas. • A former unincorporated community in Lincoln County, West Virginia. • An unincorporated community in Clear Creek, Eau Claire County, Wisconsin. • A number of townships in the United States, listed under Allen Township. • A number of rivers in England: • A river in Dorset, which joins the (Dorset) Stour at Wimborne Minster. • A river in Northumberland, which joins the South Tyne. • A river in north Cornwall, which joins the River Camel near Sladesbridge. • A minor river in south-west Cornwall, which forms the Truro River at Truro. • A village in County Kildare, Ireland. • A townland in County Tyrone, Northern Ireland. • A city in Río Negro province, Argentina. • A municipality in Northern Samar, Philippines.