Cognomen Beuan (Beuan 
) , throughout the world, is a rare last name. The family name Beuan is characteristic of Sri Lanka, where it is a rare surname, France, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Sri Lanka, France, and India. Much less frequently, Beuan is the forename as well as the last name.