Family name Lān (Loon 
, Lān) , in the world, is a common cognomen. The cognomen Lān is characteristic of Malaysia, where it is a common surname, Netherlands, where it is quite a common surname, and Aruba (explore the name in all countries). In absolute terms, the name is most common in Malaysia, Netherlands, and Myanmar. Very seldom, Lān is the forename as well as the last name.