Worldwide, Sayko (Sayko 
, Сайко 
, Саико 
) is a rare predominantly masculine, but scarcely girly first name. The forename Sayko is characteristic of Bulgaria, where it is a rare male name, Egypt, and Kyrgyzstan, where it is a rare feminine name. Not in comparison with a country's population, the name is most common in Egypt, Bulgaria, and India. More frequently, Sayko is the last name as well as the forename.