All around the world, Thein (Thein 
, သိန်း , Тейн 
) is a common epicene forename. The forename Thein is habitual in Mongolia, where it is a prevalent epicene name, Myanmar, where it is quite a rare dominantly boy's, but uncommonly female name, and Singapore. In absolute terms, it is the most numerous in Mongolia, Myanmar, and Indonesia. Likewise, Thein is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Thein | Germany, Indonesia, Malaysia, Myanmar, Mongolia |
| သိန်း | Myanmar |
| Тейн | Russia, Ukraine |
Taen, Thane, Theiñ, Theiń, Theìn, Theín, Theíñ, Theîn, Theîñ, Theîń, Theïñ, Thèiñ, Thèìn, Thèìñ, Thèìń, Thèîń, Thèïñ, Théin, Théiň, Théìñ, Théíñ, Théíń, Théîñ, Thêin, Thêiñ, Thêìñ, Thêíñ, Thêîn, Thêîñ, Thêïñ, Thëiñ, Thëín, Thëîñ, Thëïn, Thëïñ, Thëīñ, Thëįn, Thëįñ, Thēín, Thēîñ, Thĕíñ, Thęîn, Thệin, Tĥein, Tĥeiñ, Tĥeiň, Tĥeîn, Tĥeîñ, Tĥeîń, Tĥèiñ,
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nai ngwe thein (b. 1923) |
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| mya thein Burmese weightlifter (b. 1936) |
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| hla thein Burmese athlete (b. 1944) |
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| myint thein Burmese democracy activist, MM (b. 1947) |
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| aung min thein Burmese film director, MM (b. 1961) |
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| win thein politician |
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| zaw win thein researcher |
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| si thu thein researcher (ORCID 0000-0002-0022-160X) |
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| onn shaun thein researcher |
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| amon thein |
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| yin thuza thein |
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