Globally, Katsumasa (Katsumasa 
, Кацумаса 
) is a very rare predominantly masculine, but scarcely girly forename. The first name Katsumasa is characteristic of Eastern Asia, particularly China, where it is an extremely rare boy's name. Predominantly, Katsumasa is the last name as well as the forename.
| katsumasa shibata Japanese military commander from Warring States Period to Azuchi-Momoyama Period (b. 1557) |
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| matsudaira katsumasa (b. 1573) |
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| katsumasa watanabe (b. 1940) |
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| katsumasa ideo researcher |
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| katsumasa kobayashi researcher |
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| katsumasa nakamura researcher (ORCID 0000-0003-2090-881X) |
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| katsumasa ikematsu Japanese particle physicist |
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| katsumasa ota researcher |
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| katsumasa fujita researcher |
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| katsumasa irie researcher |
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| katsumasa goto researcher (ORCID 0000-0001-5380-4561) |
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| katsumasa nakajima researcher |
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| katsumasa tanaka researcher |
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| katsumasa kawahara researcher |
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| katsumasa abe researcher (ORCID 0000-0003-4258-6014) |
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