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