Allan is a common male given name that has origins in both Celtic and Gaelic languages. It is often associated with meanings related to harmony and stone. The name has been popular in various cultures and has many variations, including Alan and Alun. In addition to being a name, Allan can refer to notable individuals, such as Allan Poe, the famous American writer known for his poetry and macabre tales. The name is also used in various contexts, including Allan Gardens, a public park in Toronto, Canada, known for its beautiful conservatory and diverse plant species.