All around the world, Seietsu (Seietsu 
) is an extremely rare unknown gender first name.
Abe, Tanaka, Tamura, Takeda, Narita, Osanai, Oikawa, Yamada, Matsuda, Komatsu, Kumagai, Kikuchi, Yoshida, Murakami, Sugawara, Kakizaki, Nakamura, Ishikawa, Watanabe, Yamamoto, Yamazaki, Yamauchi, Kimura, Suzuki, Shindo, Sawada, Ito, Ono, Sato, Kato, Kami, Kudo, Goto, Endo, Hino, Miura, Kobayashi, Saito, Chiba, Kondo, Konno, Ebina, Honma, Ishii, Izumi, Ikeda, Ohara, Sasaki, Senda, and Takahashi