Family name Sayoko (Sayoko 
, Саёко) , globally, is quite a rare last name. The family name Sayoko is habitual in South-eastern Asia, particularly Indonesia, where it is a rare surname, Myanmar, where it is a very rare surname, and Malaysia. Not in comparison with a country's population, it most frequently occurs in Indonesia, China, and Myanmar. More frequently, Sayoko is the forename as well as the last name.