The Ryan STM-2 was a military version of the Ryan Sport Trainer that was developed in the 1930s. A number arrived in Australia early in the Pacific War where they were used as trainers by the Royal Australian Air Force.

Ryan began development of its ST (Sport Trainer) in 1933 and the first one flew on 8 June 1934.

A military version, which was virtually identical to the civil version called the STM, was produced in 1937. A version with a wider cockpit to accommodate military pilots wearing parachutes was soon developed and called the STM-2.

Over 1,500 of all versions of the Ryan ST were manufactured.

In 1940 the Dutch government ordered 48 STM-2s for the Netherlands East Indies Air Force and they were delivered, beginning later that year.

With the Japanese invasion of south east Asia the 34 that remained in service were shipped to Australia where they entered service with the Royal Australian Air Force.

A number survived the war and became popular in civil sports flying here.

MPM 1/72 kit comp;eted by Leigh Edmonds in 2024.