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Family name Saeki (サエキ , Saeki , さえき) , all around the world, is quite a rare cognomen. The family name Saeki is characteristic of Eastern Asia, particularly Hong Kong, where it is quite a rare surname, Taiwan, where it is a rare surname, and Japan. Measured by absolute frequency, the name is most common in Japan, Brazil, and Taiwan. More frequently, Saeki is the forename as well as the last name.