Gran Turismo 3: A-Spec is a 2001 sim racing video game developed by Polyphony Digital and published by Sony Computer Entertainment for the PlayStation 2. It is the third installment in the Gran Turismo series.

The objective of the game is to win all the provided races, championships, complete license tests and achieve 100% game completion. Every 25% of the game completed results in the player being awarded a car as a special prize. For GT3, the Gran Turismo Mode (Simulation Mode in the North American version) has a reorganized layout, with a more structured and progressive arrangement of races and challenges. Races vary from short beginner events to multi-hour endurance races and also rallying events against an opponent. In addition to these modes, car shops are now organized by country and then by manufacturer.