Megalithic art refers to the use of large stones as an artistic medium. Although some modern artists and sculptors make use of large stones in their work, the term is more generally used to describe art carved onto megaliths in prehistoric Europe.

Megalithic art is found in many places in Western Europe although the main concentrations are in Ireland, Brittany and Iberia. Megalithic art started in the Neolithic and continued into the Bronze Age. Although many monument types received this form of art the majority is carved on Neolithic passage graves. Megalithic art tends to be highly abstract and contains relatively few representations of recognisable real objects. Megalithic art is often similar to prehistoric rock art and contains many similar motifs such as the 'cup and ring mark', although the two forms of rock carving also have large stylistic differences. The meaning of megalithic art is the subject of much debate.

Weathering and vandalism have affected many examples of the art and little of it remains to day.