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Throughout the world, Sumio (Sumio , 澄夫 , Сумио ) is quite a common predominantly female, but very infrequently boy's forename. The first name Sumio is characteristic of Japan, where it is quite a rare feminine name, Afghanistan, where it is a rare boy's name, and the United States, where it is an extremely rare largely boy's, but infrequently feminine name. In absolute terms, the name is most common in Japan, Afghanistan, and China. Much less frequently, Sumio is the last name as well as the forename.
Abe, Yamada, Shimizu, Kikuchi, Hayashi, Yoshida, Murakami, Sakamoto, Takeuchi, Nakamura, Nakagawa, Nakajima, Hasegawa, Fujiwara, Ishikawa, Watanabe, Yamamoto, Yamazaki, Matsumoto, Kobayashi, Takahashi, Hashimoto, Nakano, Tanaka, Kimura, Koyama, Ito, Ono, Mori, Sato, Arai, Aoki, Kato, Goto, Endo, Hara, Yamashita, Wada, Saito, Sakai, Fujii, Inoue, Ishii, Ikeda, Ogawa, Masuda, Sasaki, Suzuki, Maeda, and Yamaguchi