Surname Ochiishi (落石 
, Ochiishi 
) , across the world, is a rare last name. The surname Ochiishi is characteristic of Japan, where it is a rare surname, China, where it is an extremely rare surname, and the United States. Very seldom, Ochiishi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 落石 | China |
| Ochiishi | Japan, China, United States |
| tomoyo ochiishi researcher |
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