The South African Railways Class NG7 2-6-0 of 1902 was a narrow gauge steam locomotive from the pre-Union era in the Cape of Good Hope.

In 1902, the Cape Government Railways placed three steam locomotives with a 2-6-0 Mogul type wheel arrangement in service on the Hopefield narrow gauge branch line which was being constructed from Kalbaskraal.

[1][3] By 1900, the Cape of Good Hope Government began to consider the construction of 2 feet (610 millimetres) narrow gauge railways.

The construction of two railways of this gauge, one from Kalbaskraal to Hopefield and another from Port Elizabeth to Avontuur, was sanctioned by the Cape Parliament in 1901.

The drivers, the middle wheelset of the coupled wheels, were flangeless to enable the engine to negotiate sharp curves.

[3] In 1915, shortly after the outbreak of the First World War, the German South West Africa colony was occupied by the Union Defence Forces.