Family name แซ่จั่ง (Surname 
, แซ่จั่ง) , all over the world, is a rare cognomen. The family name แซ่จั่ง is habitual in Northern Europe, particularly Estonia, where it is quite a rare surname, Latvia, and Lithuania. Measured by absolute frequency, the name is most common in Uzbekistan, Lithuania, and Latvia. Much less frequently, แซ่จั่ง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Surname | Australia, Uzbekistan, Lithuania, India, Latvia |