Around the world, 牛尾 (Usio 
, 牛尾 
) is a very rare epicene first name. The given name 牛尾 is habitual in Indonesia, where it is a very rare female name, Nigeria, where it is an extremely rare epicene name, and China, where it is an extremely rare boy's name. Also, 牛尾 is the last name as well as the forename.
| 牛尾 梅吉 Japanese politician, JP (b. 1864) |
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| 牛尾 健治 Japanese businessman, JP (b. 1898) |
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| 牛尾 治朗 JP (b. 1931) |
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| 牛尾 和恵 JP |
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