Surname 佐山 (Sayama 
, 佐山 , Саяма 
) , in the entire world, is quite a rare last name. The last name 佐山 is characteristic of India, where it is a rare surname, Myanmar, and Japan, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in India, China, and the United States. More frequently, 佐山 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sayama | Myanmar, Bangladesh, India, Japan, China |
| 佐山 | China |
| Саяма | Russia, Ukraine |
| 佐山一郎 Japanese author, JP (b. 1953) |
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| 佐山愛 Japanese AV idol, JP (b. 1989) |
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| 佐山彩香 Japanese gravure idol, JP (b. 1993) |
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