In all the world, Hiroyama (Hiroyama 
) is a very rare male given name. The forename Hiroyama is habitual in Eastern Asia, particularly China, where it is an extremely rare male name. Very seldom, Hiroyama is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Hiroyama | Brazil, Japan, China, United States, Philippines |