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In the entire world, Katsuko (Katsuko ) is a common mostly boy's, but seldom girly forename. The first name Katsuko is characteristic of Japan, where it is quite a common mostly boy's, but seldom feminine name, the United States, where it is a very rare feminine name, and China, where it is an extremely rare male name.
Abe, Yamada, Shimizu, Kikuchi, Hayashi, Yoshida, Murakami, Sakamoto, Sugawara, Kawamura, Nakamura, Nakagawa, Nakajima, Fujiwara, Ishikawa, Watanabe, Yamamoto, Yamazaki, Matsumoto, Kobayashi, Takahashi, Hashimoto, Fujita, Fukuda, Nakata, Nakano, Ito, Ono, Ota, Mori, Sato, Asai, Kato, Goto, Endo, Ueda, Yamashita, Maeda, Sakai, Chiba, Kondo, Fujii, Inoue, Ikeda, Sasaki, Suzuki, Kimura, Tanaka, Saito, and Yamaguchi