The 2003 Bathurst 24 Hour was a motor race staged at the Mount Panorama Circuit just outside Bathurst in New South Wales, Australia. The race started at 2:00pm on 22 November 2003 and finished at 2:00pm on 23 November. It was the second Bathurst 24 Hour.
The race featured five car classes and was intended as a showcase for the racing categories promoted by Procar Australia, namely Nations Cup cars, GT Performance Cars and Production Cars. It was also open to various other categories which included FIA Group N-GT and Grand-Am GT.
The race was won by Peter Brock, Greg Murphy, Jason Bright and Todd Kelly driving a Holden Monaro 427C.