Globally, Keijiro (Keijiro 
) is a rare masculine given name. The first name Keijiro is characteristic of Eastern Asia, particularly Japan, where it is a very rare boy's name, and China, where it is an extremely rare male name. Likewise, Keijiro is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Keijiro | Japan, China, Canada, United States, Brazil |
| keijiro kaitoku Japanese sailor, JP (b. 1929) |
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| keijiro ohshimo researcher, ORCID id # 0000-0002-2397-6896 |
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| keijiro mizukami researcher |
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| keijiro suzuki researcher |
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| keijiro sugimura researcher (ORCID 0000-0002-5100-9377) |
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| keijiro kamibayashi botanist |
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| keijiro ishikawa researcher (ORCID 0000-0002-4590-4471) |
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| keijiro shiomitsu researcher (ORCID 0000-0002-0638-8961) |
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