Family name Rouyan (Rouyan 
) , across the world, is a very rare surname. The family name Rouyan is characteristic of Poland, where it is a very rare surname, Malaysia, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Poland, Malaysia, and India. Also, Rouyan is the forename as well as the last name.