Surname 天谷 (天谷 
) , in all the world, is a very rare last name. The cognomen 天谷 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 天谷 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 天谷 | China |
| 天谷一夫 Japanese musician and composer, JP (b. 1961) |
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| 天谷知子 Japanese bureaucrat, JP |
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