Metrorail Gauteng is a network of commuter rail services in Gauteng province in South Africa, serving the Johannesburg and Pretoria metro areas.

It is operated by Metrorail, a division of the Passenger Rail Agency of South Africa (PRASA).

Routes serve central Johannesburg, the East Rand, Soweto, the Vaal Triangle, the West Rand, central Pretoria, and suburbs to the north, east and west of Pretoria.

Significant areas not served by Metrorail are the northern and western suburbs of Johannesburg, including Sandton and Randburg, and the south-eastern suburbs of Pretoria.

Some of the northern suburbs of Johannesburg are now served by the new Gautrain rapid-rail system.