Cognomen ยัน (Yan 
, ยัน 
) , worldwide, is a prevalent family name. The surname ยัน is habitual in Myanmar, where it is a widespread surname, Cayman Islands, where it is a common surname, and Hong Kong (explore the name in all countries). In absolute terms, it is the most numerous in China, Myanmar, and Malaysia. Very seldom, ยัน is the forename as well as the last name.