Cognomen Vieng (Vieng 
) , worldwide, is a rare surname. The family name Vieng is characteristic of South-eastern Asia, particularly Laos, where it is quite a common surname, Malaysia, where it is a rare surname, and Cambodia, where it is a very rare surname. Measured by absolute frequency, it is commonest in Laos, Malaysia, and the United States. More frequently, Vieng is the forename as well as the last name.