Family name Euan (Euan 
, 尤安 
, ユアン ) , all around the world, is a common surname. The family name Euan is characteristic of Mexico, where it is quite a common surname, Japan, where it is a rare surname, and Malaysia. Measured by absolute frequency, it is commonest in Mexico, Japan, and China. Much less frequently, Euan is the forename as well as the last name.