Family name 允玉 (Yunyu 
, 允玉 ) , in the world, is a rare last name. The cognomen 允玉 is habitual in Singapore, where it is a very rare surname, Malaysia, and China. More prevalently, 允玉 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yunyu | Malaysia, China, Switzerland, Australia, United States |
| 允玉 | China |