Surname Silgalis (Silgalis 
) , in the entire world, is a rare family name. The family name Silgalis is habitual in Northern Europe, particularly Lithuania, where it is quite a rare surname, Estonia, where it is a rare surname, and Norway, where it is a very rare surname. In absolute terms, it is commonest in Lithuania, the United States, and Spain.
| VARIANT | COUNTRY |
|---|---|
| Silgalis | Estonia, Spain, Lithuania, Germany, United States |