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