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