Cognomen 蔓衡 (蔓衡 
) , in the entire world, is a very rare surname. The cognomen 蔓衡 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 蔓衡 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 蔓衡 | China |