The S type carriages are a corridor-type passenger carriage used on the railways of Victoria, Australia. The first carriages were constructed by the Victorian Railways in 1937 for use on the Spirit of Progress, with additional carriages built for other trains until the mid-1950s.

The Victorian Railways (VR), trading from 1974 as VicRail, was the state-owned operator of most rail transport in the Australian state of Victoria from 1859 to 1983. The first railways in Victoria were private companies, but when these companies failed or defaulted, the Victorian Railways was established to take over their operations. Most of the lines operated by the Victorian Railways were of 5 ft 3 in. However, the railways also operated up to five 2 ft 6 in narrow gauge lines between 1898 and 1962, and a 4 ft 8+1⁄2 in standard gauge line between Albury and Melbourne from 1961.