Last name ซุย (Sui 
, Suwi 
, ซุย 
) , in all the world, is a widespread cognomen. The family name ซุย is characteristic of Mongolia, where it is a widespread surname, Malaysia, where it is quite a common surname, and Cayman Islands (explore the name in all countries). Measured by absolute frequency, it is commonest in China, Mongolia, and Malaysia. Much less frequently, ซุย is the forename as well as the last name.