MacLellan is a surname of Scottish origin, often associated with various notable individuals and families. The name is derived from the Gaelic term meaning "son of the servant," reflecting its historical roots in Scotland. It is commonly found in regions such as Argyll and Bute. In addition to being a surname, MacLellan can refer to several places, including MacLellan's Castle in Kirkcudbright, Scotland. This historic site showcases the architectural style of the 16th century and is a popular tourist attraction, highlighting the rich cultural heritage of the area.