Family name Inpeng (Inpeng 
, อินเป้ง) , worldwide, is a rare cognomen. The last name Inpeng is characteristic of Laos, where it is quite a rare surname, Thailand, where it is a rare surname, and Chile, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Laos, Thailand, and the United States. Also, Inpeng is the forename as well as the last name.