Family name Kyusu (Kyusu 
) , globally, is a rare last name. The last name Kyusu is characteristic of Eastern Asia, particularly Japan, where it is a rare surname, and China, where it is an extremely rare surname. Much less frequently, Kyusu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kyusu | Japan, China |