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