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Around the globe, Seiki (Seiki , セイキ , سيكي ) is a rare predominantly masculine, but scarcely female first name. The first name Seiki is characteristic of Japan, where it is a rare masculine name, Nigeria, where it is an extremely rare epicene name, and Brazil, where it is an extremely rare boy's name. In absolute terms, it most frequently occurs in Japan, China, and India. Very seldom, Seiki is the last name as well as the forename.
Abe, Yamada, Uehara, Komatsu, Kikuchi, Hayashi, Okamoto, Yoshida, Matsuoka, Murakami, Sugawara, Nakamura, Nakayama, Nakajima, Fujiwara, Watanabe, Yamamoto, Yamazaki, Matsumoto, Kobayashi, Takahashi, Hashimoto, Fujita, Fukuda, Takano, Tanaka, Ito, Ono, Ota, Mori, Sato, Ando, Kato, Goto, Endo, Higa, Yamashita, Maeda, Saito, Chiba, Fujii, Inoue, Ikeda, Okada, Sasaki, Suzuki, Kaneko, Kojima, Miura, and Yamaguchi