Cognomen Olzvoi (Olzvoi 
) , around the globe, is a rare surname. The last name Olzvoi is habitual in Eastern Asia, particularly Mongolia, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Olzvoi | Mongolia |
| dashnyamyn olzvoi Mongolian boxer (b. 1949) |
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| khumbagyn olzvoi (b. 1949) |
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| olzvoi ochbayar Mongolian footballer, MN (b. 1989) |
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Khatan, Delger, Tergel, and Khatanbaatar