The South African Railways Class 8A 4-8-0 of 1902 was a steam locomotive from the pre-Union era in Transvaal.

In 1902, the Imperial Military Railways placed forty Cape 8th Class 4-8-0 Mastodon type steam locomotives in service.

They were built to the specifications of the 8th Class 4-8-0 Mastodon type which had been designed by H.M. Beatty, the chief locomotive superintendent of the Cape Government Railways (CGR) from 1896 to 1910, and were the last locomotives to be ordered under the military administration of the railways in the Transvaal and Orange Free State.

The locomotives were delivered with type XF tenders, which rode on 2-axle bogies and had a capacity of 10 long tons (10.2 tonnes) coal and 3,000 imperial gallons (13,600 litres) water.

[5][7] When these forty locomotives were assimilated into the South African Railways (SAR) in 1912, they were renumbered in the range from 1092 to 1131 and designated Class 8A.

[9] Two locomotives were equipped with superheated boilers, 20 inches (508 millimetres) bore cylinders and inside admission piston valves, and were reclassified to Class 8AW.

[9] In SAR service, the 4-8-0 Class 8 family of locomotives served on every system in the country and, in the 1920s, became the mainstay of motive power on many branch lines.

This was the last locomotive to be purchased by this logging company, which worked the teak forests which stretched 100 miles (160 kilometres) to the north-west of Livingstone in Zambia.