The 2003 WGC-NEC Invitational was a golf tournament that was contested from August 21–24, 2003 over the South Course at Firestone Country Club in Akron, Ohio. It was the fifth WGC-NEC Invitational tournament, and the second of four World Golf Championships events held in 2003.Darren Clarke won the tournament to capture his first WGC-NEC Invitational and his second World Golf Championships title.