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Around the world, Seiko (Seiko , セイコ , Сейко ) is quite a rare unisex given name. The forename Seiko is characteristic of Bulgaria, where it is quite a rare male name, Japan, where it is quite a rare principally feminine, but scarcely masculine name, and Hong Kong, where it is a rare female name. Measured by absolute frequency, this name is the most popular in Japan, Indonesia, and the United States. Also, Seiko is the last name as well as the forename.
Abe, Yamada, Matsuda, Kikuchi, Hayashi, Yoshida, Murakami, Takeuchi, Nakamura, Nakayama, Nakajima, Hasegawa, Fujiwara, Ishikawa, Watanabe, Yamamoto, Yamazaki, Matsumoto, Kobayashi, Kinoshita, Takahashi, Hashimoto, Oshiro, Yamashita, Fujita, Tateno, Ito, Ono, Mori, Sato, Kato, Goto, Endo, Maeda, Saito, Kondo, Fujii, Inoue, Ishii, Ikeda, Okada, Morita, Sasaki, Suzuki, Kaneko, Kimura, Tanaka, Nakano, and Yamaguchi