In the entire world, 佐山 (Sayama 
, 佐山 , Саяма 
) is a common primarily female, but scarcely male forename. The forename 佐山 is characteristic of India, where it is a rare feminine name, Bangladesh, and Japan, where it is a very rare feminine name. Not in comparison with a country's population, it is commonest in India, China, and Bangladesh. Much less frequently, 佐山 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sayama | Myanmar, Bangladesh, China, India, Japan |
| 佐山 | China |
| Саяма | Ukraine, Russia |
| 佐山俊二 Japanese actor and comedian (1918-1984), JP (b. 1918) |
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| 佐山和夫 Japanese novelist, JP (b. 1936) |
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| 佐山陽規 Japanese actor and seiyū, JP (b. 1950) |
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| 佐山展生 Japanese teacher, JP (b. 1953) |
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| 佐山雅弘 Japanese pianist and composer (1953-2018), JP (b. 1953) |
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| 佐山善則 Japanese mechanical designer, JP (b. 1967) |
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