Surname Vadonis (Vadonis 
) , around the globe, is a very rare last name. The cognomen Vadonis is habitual in Latvia, where it is quite a rare surname, Germany, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Very seldom, Vadonis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vadonis | Brazil, Latvia, United States, United Kingdom, Germany |