Cognomen Asno (Asto 
, Asnu 
, Asno 
) , in all the world, is a common surname. The cognomen Asno is characteristic of Peru, where it is quite a common surname, Philippines, where it is a rare surname, and Indonesia. Likewise, Asno is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Asto | Ethiopia, Philippines, Peru, Indonesia, India |
| Asnu | Philippines, Malaysia, Tanzania, Indonesia, India |
| Asno | Philippines, Malaysia, Indonesia, United States, India |
| Snon | Morocco, Australia, Malaysia, Indonesia, India |