Cognomen Omatsubara (Omatsubara 
) , worldwide, is a very rare surname. The last name Omatsubara is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. Likewise, Omatsubara is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Omatsubara | China |
Komatsubara, Komatsuhara, and Комацубара