Cognomen 智也 (智也 
) , throughout the world, is a very rare family name. The surname 智也 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 智也 is the forename as well as the last name.
| 油谷 智也 JP (b. 1979) |
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| 石井 智也 Japanese alpine skier, JP (b. 1989) |
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