Family name ティアン (Tiang 
, ティアン 
) , in the world, is a common cognomen. The last name ティアン is characteristic of Malaysia, where it is quite a common surname, Singapore, where it is quite a rare surname, and New Zealand, where it is a rare surname. In absolute terms, the name is most common in South-eastern Asia, particularly Malaysia, Indonesia, and Singapore. Much less frequently, ティアン is the forename as well as the last name.