The 2005 Spanish GP2 round was a GP2 Series motor race held on 7 and 8 May 2005 at the Circuit de Catalunya in Montmeló, Catalonia, Spain.

It was the second race of the 2005 GP2 Series season.

The race was used to support the 2005 Spanish Grand Prix.

The first race was won by Gianmaria Bruni for Coloni Motorsport, with Scott Speed second for iSport International and Heikki Kovalainen finishing third for Arden International.

The second race was won by José María López for DAMS, with Nelson Piquet Jr. for Hitech Piquet Sports and Scott Speed also on the podium.