Last name Саяко (Sayako 
, Саяко, Curoda 
) , in the entire world, is a rare cognomen. The surname Саяко is habitual in Japan, where it is a very rare surname, Peru, where it is an extremely rare surname, and Malaysia. In absolute terms, it most frequently occurs in Japan, China, and India. More frequently, Саяко is the forename as well as the last name.