Cognomen Sigvaldason (Sigvaldason 
) , in the world, is a rare last name. The surname Sigvaldason is habitual in Iceland, where it is quite a common surname, Canada, where it is a rare surname, and Norway.
| VARIANT | COUNTRY |
|---|---|
| Sigvaldason | Norway, Iceland, United States, Canada, Denmark |
| guðmundur e. sigvaldason Icelandic geologist (1932-2004), IS (b. 1932) |
|