What nationality do you think this last name is?

Question:VanAsdlen

Best Answer - Chosen by Asker: VanAsdlen

My guess would be Dutch. But it could also be Danish, it is around that area.

Sounds Dutch to me.

austrian

German

Polish

GERMAN

Flemish or Dutch

I would say Dutch or Belgian.

dutch or austrian

I don't throw darts (or guess). Names MAY come from one country, or from more than one. No guarantees.
What you can find is where the person with the name was born.