User blog comment:Whiskey13/One Piece Nationality/@comment-1595565-20110108170001

This was already answered for the first eight in an SBS. Luffy is Brazilian, Zoro is Japanese, Nami is Swedish, Usopp is African, Sanji is French, Chopper is Canadian, Robin is Russian, and Franky is American. As for Brook, I can see him being either French or Spanish.

Also I think Crocodile could be Italian, Ace would be Portuguese, Laffitte would be French, and Van Augur would be German.