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