GT1

GT1 may refer to

• FIA GT1 World Championship
• Gran Turismo (video game)
• A top line category in GT racing, existing between 1993 to 1998, which was merged into the LMP category
• Porsche 911 GT1, designated to compete at the above category
• Mercedes-Benz CLK GTR, designated to compete at the above category
• Nissan R390, designated to compete at the above category
• Toyota GT-One, designated to compete at the above category
• GT-1 (missile), a World War II glide torpedo
• Tweed GT-1, glider