Last name แซ่จั่น (Saechan 
, แซ่จั่น) , all over the world, is a rare cognomen. The last name แซ่จั่น is characteristic of Thailand, where it is quite a rare surname, Italy, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, แซ่จั่น is the forename as well as the last name.