Family name Xystus (Xystus 
) , throughout the world, is a very rare surname. The surname Xystus is habitual in Malaysia, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and the United States. Also, Xystus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Xystus | Nigeria, United States, Malaysia, Philippines, India |