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 | Philippines, India, Ethiopia, Indonesia, Peru |
| Asnu | Philippines, Tanzania, Malaysia, India, Indonesia |
| Asno | Philippines, Malaysia, India, Indonesia, United States |
| Snon | Malaysia, India, Australia, Indonesia, Morocco |