Family name 曰瑕 (曰瑕 
) , around the globe, is a very rare cognomen. The last name 曰瑕 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 曰瑕 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 曰瑕 | China |