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 over 12 laps, a total distance of 105 miles.

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