Last name Yex (Yex 
, ใช่) , worldwide, is a rare family name. The last name Yex is habitual in South-eastern Asia, particularly Myanmar, where it is a rare surname, Malaysia, where it is a very rare surname, and Indonesia. Measured by absolute frequency, this name is the most popular in Myanmar, Indonesia, and the United States. More frequently, Yex is the forename as well as the last name.