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