2005 in formula racing

2005 Formula One World Championship

2005 GP2 Series season

2005–06 A1 Grand Prix season

2005 Champ Car season

2005 IndyCar Series season

2005 Formula Renault 3.5 Series season

2005 Formula 3 Euro Series season

2005 Formula Nippon season

2005 Eurocup Formula Renault 2.0 season