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