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