McLean is a city located in the United States. While the name is associated with various locations, it also serves as a common surname of Scottish origin.
The surname McLean is an Anglicisation of the Scottish Gaelic "Mac Gille Eathain," which translates to "son of Gillean." The name Gillean refers to "the Servant of [Saint] John [the Baptist]" and is derived from Gilleathain na Tuaidh, a prominent 5th-century warrior known as "Gillian of the Battleaxe."