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Surname Iwayanagi (岩柳 , Iwayanagi
) , all over the world, is a very rare family name. The family name Iwayanagi is habitual in Thailand, where it is a very rare surname, and China, where it is an extremely rare surname. More frequently, Iwayanagi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 岩柳 | China |
| Iwayanagi | Thailand |