Surname Саёко (Sayoko 
, Саёко) , globally, is quite a rare cognomen. The surname Саёко is characteristic of South-eastern Asia, particularly Indonesia, where it is a rare surname, Myanmar, where it is a very rare surname, and Malaysia. In absolute terms, this name is the most popular in Indonesia, China, and Myanmar. More frequently, Саёко is the forename as well as the last name.