Cognomen ซีน (Sin 
, Zeen 
, Seenan 
) , around the globe, is a widespread surname. The cognomen ซีน is habitual in Macao, where it is a common surname, Malaysia, and Myanmar (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Myanmar, Malaysia, and India. Very seldom, ซีน is the forename as well as the last name.