A bust is a sculpted or cast representation of the upper part of the human figure, depicting a person's head and neck, as well as a variable portion of the chest and shoulders. The piece is normally supported by a plinth. These forms recreate the likeness of an individual. These may be of any medium used for sculpture, such as marble, bronze, terracotta or wood.

Sculptural portrait heads from classical antiquity are sometimes displayed as busts, but these are often fragments from full-body statues, or were originally created to be inserted into a preexisting body; these portrait heads are not included in this article.