Cognomen Seai (ทะเล 
, Seai 
) , in the world, is a rare last name. The surname Seai is habitual in South-eastern Asia, particularly Myanmar, where it is a rare surname, Malaysia, where it is a very rare surname, and Thailand. Measured by absolute frequency, it is commonest in Myanmar, Malaysia, and India. Also, Seai is the forename as well as the last name.