Last name Орихара (Orihara 
, Орихара 
) , in the world, is a rare surname. The cognomen Орихара is habitual in New Zealand, where it is a very rare surname, Japan, and Indonesia. In absolute terms, it is commonest in Japan, Indonesia, and the United States. Very seldom, Орихара is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Orihara | China, Indonesia, United States, Philippines, Japan |
| Орихара | Russia |