Last name Smalkais (Smalkais 
) , in the world, is a very rare surname. The family name Smalkais is habitual in Latvia, where it is quite a rare surname, Finland, where it is a very rare surname, and Canada. Not in comparison with a country's population, this name is the most popular in Latvia, the United States, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Smalkais | Latvia, Canada, United States, Germany, Finland |