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Worldwide, Masuko (Masuko , 益子 , Масуко) is quite a rare predominantly female, but scarcely masculine first name. The given name Masuko is characteristic of Japan, where it is quite a rare feminine name, South Africa, where it is a very rare largely female, but infrequently male name, and China, where it is a very rare gender-neutral name. Very seldom, Masuko is the last name as well as the forename.
Abe, Tanaka, Tanabe, Hirano, Fukuda, Isozaki, Otsuka, Yamada, Matsuda, Mallett, Shimizu, Keiichi, Kuwabara, Parrish, Hayashi, Yoshida, Miyahara, Kawamura, Watanabe, Yamamoto, Matsumoto, Shiraishi, Gaines, Takahashi, Rivard, Kaneda, Bik, Ito, Ono, Mori, Sato, Kato, Long, Unno, Ueno, Saito, Sakai, Souza, Kinji, Fujii, Inoue, Isaka, Ikeda, Okada, Ogura, Morita, Suzuki, Kimura, and Yamashita