The 2005 V8 Supercar season was the 46th year of touring car racing in Australia since the first runnings of the Australian Touring Car Championship and the fore-runner of the present day Bathurst 1000, the Armstrong 500. There were 21 touring car race meetings held during 2005; a thirteen-round series for V8 Supercars, the 2005 V8 Supercar Championship Series (VCS), two of them endurance races; a seven-round second tier V8 Supercar series 2005 Holden Performance Driving Centre V8 Supercar Series (HVS) and V8 Supercar support programme event at the 2005 Australian Grand Prix.