Surname Sumitomo (Sumitomo 
, 住友 
) , throughout the world, is a rare last name. The cognomen Sumitomo is characteristic of Singapore, where it is a rare surname, Indonesia, and Australia, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Indonesia, Brazil, and Japan. Also, Sumitomo is the forename as well as the last name.
| shinʼichi sumitomo (b. 1924) |
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| masahiro sumitomo researcher (ORCID 0000-0003-1141-5618) |
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| makoto sumitomo researcher |
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| naokata sumitomo researcher |
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| katsuhiko sumitomo researcher (ORCID 0000-0002-7101-1415) |
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| midori sumitomo researcher |
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| shuji sumitomo researcher |
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| koji sumitomo researcher |
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| hiroyuki sumitomo researcher |
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| yoske sumitomo researcher |
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| chiho sumitomo researcher |
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