Around the world, Thi (Thi 
, Тхи 
, ธีร์ 
) is a common epicene forename. The first name Thi is characteristic of Mongolia, where it is a common female name, Macao, where it is quite a common female name, and France. Measured by absolute frequency, it is the most numerous in France, Mongolia, and Vietnam. Very seldom, Thi is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Thi | Vietnam, Malaysia, Myanmar, France, Mongolia |
| Тхи | Kazakhstan, Russia, Ukraine, Belarus |
| ธีร์ | Thailand |
| ティ | Japan |
Thi is also a name for the fictitious and mythical characters: .
| thi sách (b. 13) |
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| ung thi Vietnamese businessman (1913-2001) (b. 1913) |
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| nguyễn đinh thi writer (1924-2003), VN (b. 1924) |
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| nguyễn thi writer, VN (b. 1928) |
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| gioan baotixita nguyễn đình thi (b. 1934) |
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| ta thi anh hoa (b. 1934) |
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| thi nhan nguyen botanist (b. 1953) |
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| thi thanh nguen (b. 1947) |
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| thi tam pham (b. 1948) |
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| thi văn tám VN (b. 1948) |
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| đào trọng thi VN (b. 1951) |
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| lê văn thi VN (b. 1957) |
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| thi kim loan tran chess player (b. 1971) |
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| thi thu loan doan researcher, VN (b. 1971) |
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| thi ha chau tran researcher (b. 1971) |
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