Worldwide, Zijun (Zijun 
, 自君 , 自均 ) is quite a rare mostly boy's, but uncommonly female first name. The first name Zijun is habitual in Taiwan, where it is quite a rare male name, Singapore, where it is a rare girly name, and China, where it is a rare dominantly male, but seldom female name. Measured by absolute frequency, it most frequently occurs in China, Taiwan, and the United States. Much less frequently, Zijun is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Zijun | Taiwan, China, United States, Malaysia, Australia |
| 自君, 自均 | China |
| Цзыцзюнь | Russia |
| hu zijun Qing dynasty person CBDB=341300 |
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| zijun chen researcher ORCID 0000-0002-4450-8645 |
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| hu zijun Ming dynasty person CBDB = 229064 |
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| zijun wang researcher (ORCID 0000-0001-8937-2975) |
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| zijun chen researcher (ORCID 0000-0001-9442-4936) |
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| zijun li researcher (ORCID 0000-0002-5490-5943) |
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| zijun gao researcher |
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| zijun wang researcher ORCID 0000-0002-2095-2151 |
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| zijun jackey yan Ph.D. Iowa State University 2011 |
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| zijun luo Ph.D. University of Houston 2010 |
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| zijun zhou Ph.D. Columbia University 2017 |
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| zijun xiao researcher |
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| zijun zhan researcher (ORCID 0000-0002-8238-6378) |
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| zijun huang researcher (ORCID 0000-0002-6038-4320) |
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| zijun bie researcher |
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