1977 Hang Ten 400

The 1977 Hang Ten 400 was an endurance motor race for Group C Touring Cars. It was held on 11 September 1977 at the Sandown Park circuit in Victoria, Australia over a total distance of 400 km. The race was Round 8 of the 1977 Australian Touring Car Championship and Round 1 of the 1977 Australian Championship of Makes. It was the twelfth running of the race which was later to become known as the Sandown 500.

The race was won by Peter Brock driving a Holden Torana A9X for Bill Patterson Racing.