In all the world, Sō (宗 
, Sō 
, Со 
) is a common mostly masculine, but infrequently girly first name. The first name Sō is characteristic of China, where it is quite a rare mostly boy's, but infrequently girly name, Algeria, where it is a rare boy's name, and Kazakhstan, where it is a rare epicene name. Not in comparison with a country's population, it is the most numerous in China, Algeria, and Egypt. More frequently, Sō is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 宗 | China |
| Sō | Egypt, China, Algeria, Myanmar |
| Со | Kazakhstan, Russia, Kyrgyzstan, China, Ukraine |
| Esou | Nigeria, United States, India, South Africa |
Sō is also a name for the fictitious and mythical characters: .
| sō yoshizane (b. 1639) |
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| sō shii (b Kyoto, 1738; d Osaka, 1797). Japanese seal-carver, poet and editor (b. 1738) |
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| sō yamashita Japanese local candidate (b. 1972) |
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| sō yoshinari's daughter wife of Matsudaira Masanobu |
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| sō chō Japanese noblewoman |
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| sō toku wife of Matsudaira Naritsune |
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| sō yōren |
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