Family name ต่าง (Tang 
, ต่าง) , across the world, is a prevalent surname. The last name ต่าง is characteristic of Hong Kong, where it is a prevalent surname, Cayman Islands, where it is a widespread surname, and Macao (explore the name in all countries). In absolute terms, it is the most numerous in China, Hong Kong, and Malaysia. Much less frequently, ต่าง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tang | Hong Kong, United States, Indonesia, Malaysia, China |