Cognomen Seinn (Sein 
, Sen , Seinn 
) , in the world, is a prevalent family name. The surname Seinn is habitual in Myanmar, where it is a common surname, Fiji, where it is quite a common surname, and Malaysia (explore the name in all countries). In absolute terms, it is commonest in India, Myanmar, and Bangladesh. Very seldom, Seinn is the forename as well as the last name.