The RA Class are diesel locomotives built by English Electric, Rocklea for the Western Australian Government Railways between 1969 and 1972.

The RA class were a hood type general purpose diesel-electric locomotive.

The main differences with the R class were a slight increase in length and wheelbase and deletion of the dynamic brake.

The bogies were identical to those fitted to the R class and were an English Electric design with low weight transfer characteristics.

They feature fully equalised primary spring gear, all traction motors in each bogie mounted with the nose-suspension facing inwards, traction thrust at near axle level and long pivot centres to reduce inter-bogie transfer.