Family name Ямамото (Yamamoto 
, 山元 , 山下 , among others...) , around the world, is a common surname. The last name Ямамото is characteristic of Japan, where it is quite a rare surname, Singapore, and Brazil. Measured by absolute frequency, it is commonest in Brazil, Japan, and the United States. Much less frequently, Ямамото is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yamamoto | China, Brazil, Indonesia, United States, Japan |
| 山下, 山元 | China |
| Ямамото | Kazakhstan, Ukraine, Russia |
| Jamamoto | Brazil |