Last name 小沢 (Ozawa 
, 小沢, Одзава 
) , across the world, is quite a rare surname. The surname 小沢 is characteristic of Hong Kong, where it is quite a rare surname, Singapore, where it is a rare surname, and Japan. Not in comparison with a country's population, it is commonest in Indonesia, Japan, and Brazil. Much less frequently, 小沢 is the forename as well as the last name.
| 小沢蘆庵 Japanese poet and writer, JP (b. 1723) |
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小沢圭次郎 Japanese landscape architect and educator (1842-1932), JP (b. 1842) |
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小沢武雄 JP (b. 1844) |
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小沢愛次郎 politician, JP (b. 1864) |
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小沢治三郎 Japanese admiral, JP (b. 1886) |
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小沢佐重喜 Japanese politician and lawyer, JP (b. 1898) |
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小沢 栄太郎 Japanese actor, JP (b. 1909) |
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小沢一郎 Japanese politician, JP (b. 1942) |
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| 小沢愍昌 Japanese centenarian, JP (b. 1894) |
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| 小沢久太郎 Japanese politician, JP (b. 1900) |
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小沢鋭仁 Japanese politician, JP (b. 1954) |
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小沢 昌記 Japanese politician, JP (b. 1958) |
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| 小沢儀明 JP (b. 1899) |
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| 小沢貞孝 Japanese politician (1916-2002), JP (b. 1916) |
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| 小沢三千雄 JP (b. 1910) |
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