Cognomen 俞洪 (俞洪 
) , all around the world, is a very rare family name. The last name 俞洪 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 俞洪 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 俞洪 | China |