MacAlister is a surname of Scottish origin, often associated with the Gaelic name "Mac Alasdair," meaning "son of Alasdair." It is commonly found in Scotland and among Scottish descendants worldwide. The name has historical significance, linked to various clans and families in the region. In addition to being a surname, MacAlister can refer to several places, institutions, or notable individuals. For example, MacAlister Hall is a well-known residence at University of Pennsylvania, and MacAlister may also refer to various businesses or organizations that carry the name.