Family name Tachang (Tachang 
, ตาช้าง, ตาชั่ง) , around the globe, is quite a rare surname. The family name Tachang is characteristic of India, where it is a rare surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Tachang is the forename as well as the last name.