Family name แก๊ก (Gak 
, Kaek 
, แก๊ก) , across the world, is quite a common cognomen. The last name แก๊ก is characteristic of Afghanistan, where it is quite a rare surname, Serbia, and Bosnia and Herzegovina. Measured by absolute frequency, this name is the most popular in Afghanistan, Egypt, and Malaysia. Much less frequently, แก๊ก is the forename as well as the last name.