Cognomen Gyu (Gyu 
, غيو 
, Гю 
) , in the world, is quite a rare last name. The family name Gyu is habitual in South Korea, where it is quite a rare surname, Myanmar, and Malaysia. Measured by absolute frequency, this name is the most popular in Myanmar, South Korea, and China. Likewise, Gyu is the forename as well as the last name.