2004 Grand Prix of Portorož

The 2004 Grand Prix of Portorož was a non-championship Formula 3000 race held on a temporary circuit at Portorož Airport, Portorož, Slovenia on 2 October 2004.

It was contested over five laps by eight drivers from four Italian teams that had contested that year's International F3000 championship: Coloni Motorsport, CMS Performance, Durango and AEZ IE Engineering. All eight drivers used Lola B02/50 chassis with Zytek engines, as in the championship.

Austrian driver Patrick Friesacher won the race for Coloni, with Italians Matteo Meneghello and Matteo Bobbi second and third respectively for CMS.