Globally, Yiwei (Yiwei 
, 以伟 , 以为 ) is quite a rare mostly masculine, but seldom feminine first name. The first name Yiwei is characteristic of Singapore, where it is a rare mostly feminine, but seldom male name, China, where it is a rare principally male, but very seldom female name, and Australia, where it is a rare epicene name. In absolute terms, the name is most common in China, the United States, and Australia. Very seldom, Yiwei is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Yiwei | Japan, China, Australia, Taiwan, United States |
| 以为, 以伟 | China |
| Ивэй | Russia |
| zheng yiwei Ming dynasty official (b. 1550) |
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| xue yiwei (b. 1964) |
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| yiwei li researcher (ORCID 0000-0002-5203-0290) |
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| yiwei yao researcher |
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| yiwei gong researcher |
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| yiwei wang researcher ORCID 0000-0002-8447-9631 |
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| yiwei chen Ph.D. Massachusetts Institute of Technology 2012 |
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| yiwei zhao researcher ORCID 0000-0003-3935-5637 |
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| yiwei zhao researcher (ORCID 0000-0003-4442-2267) |
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| yiwei xiong researcher (ORCID 0000-0002-6205-4691) |
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| yiwei lin researcher |
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| yiwei chu researcher |
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| yiwei li researcher (ORCID 0000-0003-2389-3203) |
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| yiwei qian researcher at Shanghai JiaoTong University School of Medicine |
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| yiwei song researcher |
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