1948 South Australian 100

The 1948 South Australian 100 was a motor race staged at the Lobethal Circuit in South Australia on 1 January 1948. It was contested as a handicap race with the slowest cars starting first and the fastest cars last. The race was staged over 12 laps, a total distance of 105 miles. It was open to cars of any engine size.

The race, which was the second South Australian 100 to be held at Lobethal, was won by Jim Gullan driving a Ballot Oldsmobile.