The R-class was a class of eight trams built by James Moore & Sons and the Melbourne & Metropolitan Tramways Board (MMTB).
The Fitzroy, Northcote & Preston Tramways Trust (FNPTT) placed five trams in service in 1920.
All passed to the MMTB on 2 February 1920 when it took over the FNPTT becoming the R-class and being renumbered 172-176.
Numbers 151, 174-176 were rebuilt to operate all night services in 1937 and in this role travelled across the network.
[1] This Melbourne rail-related article is a stub.