The 1934 Winter 100 was a motor race held at the Phillip Island circuit, near Cowes on Phillip Island, in Victoria, Australia on 4 June 1934. The race, which was organised by the Light Car Club of Australia, was staged over 15 laps, a total distance of 100 miles. It was contested on a handicap basis with the first car scheduled to start 17 minutes 30 seconds before the Scratch car.
The race was won by Les Jennings driving an MG Magna from a handicap of 10 minutes 45 seconds.