Family name Udana (Udana 
) , in all the world, is quite a rare last name. The family name Udana is habitual in Sri Lanka, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and India, where it is a very rare surname. In absolute terms, it is commonest in Sri Lanka, India, and Indonesia. Likewise, Udana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Udana | Japan, India, Sri Lanka, United Arab Emirates, Indonesia |