Cognomen 上昌也 (上昌也 
) , in the entire world, is a very rare family name. The cognomen 上昌也 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 上昌也 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 上昌也 | China |