A village east of Cumnock, East Ayrshire council area, Scotland, from lagan (“dell”) (OS grid ref NS5920). • A Scottish habitational surname from Scottish Gaelic, from the village in Ayrshire. • A surname from Irish, a variant of Lohan. • A male given name transferred from the surname. Used since at least the 19th century, and popular in the 2000s. • A female given name transferred from the surname, of 1990s and later usage; much less common than the male name. • A number of places in the United States: • An unincorporated community in Cullman County, Alabama. • An unincorporated community in Benton County, Arkansas. • An unincorporated community in Brouilletts Creek Township, Edgar County, Illinois. • An unincorporated community in Dearborn County, Indiana; named for nearby Logan Creek. • An unincorporated community in Lawrence County, Indiana. • A city, the county seat of Harrison County, Iowa; named for Union Army general John A. Logan. • A minor city in Phillips County, Kansas; named for John A. Logan. • An unincorporated community in Greene County, Missouri; named for a local family. • An unincorporated community in Lawrence County, Missouri; named for landowners William and Hetty E. Logan. • An unincorporated community in Gallatin County, Montana; named for Capt. William Logan, who participated in the campaign against American Indians in Montana. • An unincorporated community in Nebraska. • A village in Quay County, New Mexico. • A city, the county seat of Hocking County, Ohio; named for Mingo leader Chief Logan. • A neighborhood of Philadelphia, Pennsylvania. • A city, the county seat of Cache County, Utah; named for the river rising in the Bear River Mts. • A city, the county seat of Logan County, West Virginia; named for Chief Logan. • An unincorporated community in the town of Breed, Oconto County, Wisconsin. • A number of townships in the United States, listed under Logan Township. • A river in the United States, flowing from the Bear River Mountains in Idaho into the Little Bear River at Benson, Utah. • A locality in the Shire of Loddon and the Shire of Northern Grampians, north western Victoria, Australia • A river in Queensland, Australia; flowing from near Mount Barney into the Moreton Bay at Woongoolba. • A local government area in south-east Queensland, Australia, named after Patrick Logan; in full, the City of Logan.