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