Forza Motorsport is a racing simulator video game developed by Microsoft Game Studios for the Xbox gaming system. It was shipped to stores on May 3 2005. The name Forza means "Force" in Italian.

Many people were confused when Forza was first announced, because Microsoft already had a flagship racing game in the form of the Project Gotham Racing series. The primary difference between the two is that Forza aims to be a very accurate simulation whereas PGR has much more of an arcade feel. Forza is circuit-based while PGR is mainly city-based (although some of the tracks in Forza are present).

Forza is also notable for its ability to realistically model damage to cars, from both a cosmetic and a performance standpoint, which was (and still is) a very impressive feat in terms of acquiring the licenses for the 200+ cars. This changes the way the game is played, in contrast to the Gran Turismo series, as collisions with barriers and other cars will alter the car's handling, top speed and acceleration. More noticeably, spoilers and bumpers can be knocked off cars, paint can be scraped off and windows can be smashed completely (the front window however can only be shattered). Microsoft did not, however, get permission from car manufacturers to depict cars rolling over.

The cover art features a tuned Acura NSX racing against a tuned Nissan 350Z.