This year's event, organised by the embassies of Denmark, Norway, Sweden and Finland, and the Nordic Chamber of Commerce, was dedicated to construction and infrastructure.
Organisers said it was the largest Nordic event of this kind ever to be organised outside Scandinavia.
The fair was opened by Croatian President Stjepan Mesic, who said that Croatia and all other countries in the region should look to the Scandinavian countries as a model, both in politics and the economy.
The purpose of the fair is to boost trade between Croatia and the Nordic countries, which has reached 494 million euros this year.
Major Nordic investors in Croatia include Carlsberg, Ericsson, ABB, Rockwool, and Hartmann.