In all the world, 昔洪 (昔洪 
) is a very rare boy's forename. The forename 昔洪 is habitual in Eastern Asia, particularly China, where it is an extremely rare boy's name. Very seldom, 昔洪 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 昔洪 | China |