Cognomen Lyann (Lyann 
) , across the world, is a rare family name. The surname Lyann is habitual in Myanmar, where it is quite a rare surname, Nicaragua, where it is a very rare surname, and Malaysia. Not in comparison with a country's population, it most frequently occurs in South-eastern Asia, particularly Myanmar, Indonesia, and Thailand. Likewise, Lyann is the forename as well as the last name.