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Globally, Seihan (Seihan ) is a very rare epicene first name. The given name Seihan is characteristic of Eastern Europe, particularly Bulgaria, where it is a rare male name. Much less frequently, Seihan is the last name as well as the forename.
Ito, Tanaka, Nomura, Harada, Ishida, Oshiro, Yamane, Yamada, Matsuda, Mustafa, Shiroma, Aragaki, Kavazov, Ramadan, Noriega, Murakami, Nakamura, Nakagawa, Fujiwara, Watanabe, Yamamoto, Matsumoto, Kimura, Nakamashi, Chinen, Sanada, Sato, Sudo, Kato, Kono, Hika, Ueda, Maeda, Murai, Kulov, Takei, Taira, Nakao, Honda, Fujii, Isobe, Ikeda, Iwata, Ogura, Ogawa, Matsuo, Makino, Suzuki, and Shimabukuro