Last name Tamagawa (玉川 
, Tamagawa 
) , in the entire world, is quite a rare cognomen. The surname Tamagawa is habitual in China, where it is a rare surname, Japan, where it is a very rare surname, and Hungary. In absolute terms, it is commonest in China, Japan, and the United States. More frequently, Tamagawa is the forename as well as the last name.
| tamagawa yoshihisa ii (b. 1779) |
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| tamagawa chōtatsu prince of Ryukyu (b. 1826) |
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| tamagawa hôju Japanese swordsmith, JP |
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| shingo tamagawa Japanese filmmaker, JP |
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| yuji tamagawa researcher |
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| masaaki tamagawa researcher |
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| tamagawa yoshiharu Japanese swordsmith, JP |
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| hiroshi tamagawa researcher |
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| tamagawa yoshihisa iii |
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