Surname เซียว (Siao 
, เซียว 
, Seao 
) , across the world, is quite a common cognomen. The surname เซียว is habitual in Cayman Islands, where it is quite a common surname, Mauritius, where it is quite a rare surname, and Philippines. Measured by absolute frequency, it is commonest in Philippines, Tanzania, and Malaysia. Much less frequently, เซียว is the forename as well as the last name.