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