Throughout the world, Katsuji (Katsuji 
) is a rare masculine forename. The first name Katsuji is characteristic of Japan, where it is a very rare boy's name, the United States, where it is an extremely rare masculine name, and China. Much less frequently, Katsuji is the last name as well as the forename.
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| Katsuji | Japan, China, Taiwan, United States, Brazil |
| katsuji koizumi (b. 1883) |
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| katsuji tsuneki (b. 1908) |
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| katsuji morishima Japanese ice hockey player, JP (b. 1942) |
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| katsuji hasegawa professional golfer, JP (b. 1946) |
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| katsuji maeda composer (1970-), JP (b. 1970) |
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| katsuji uezu Japanese motorcycle racer, JP (b. 1975) |
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| katsuji morishita Japanese artist |
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| katsuji shinagawa researcher |
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| katsuji aikawa researcher |
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| katsuji yoshioka researcher (ORCID 0000-0002-2378-3541) |
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| katsuji uetake researcher |
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| katsuji hirano researcher |
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| katsuji suzuki researcher |
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| katsuji morioka researcher (ORCID 0000-0002-0835-5215) |
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| katsuji nishimura researcher (ORCID 0000-0001-8238-4164) |
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