The R557 is a Regional Route in Gauteng, South Africa that connects Ennerdale with the Suikerbosrand Nature Reserve via Kanana Park and Randvaal.

The road heads north-east to meet the eastern terminus of the R558 before turning to the east-south-east in Kanana Park and it proceeds to reach a T-junction with the R82.

It joins the R82 northwards for two kilometres before becoming its own road eastwards in the southern part of Walkerville.

The R557 continues east-south-east to cross the R59 highway (Sybrand van Niekerk Freeway) in Randvaal (Daleside).

It crosses the Klip River and continues south-east, passing by the south-western corner of the Suikerbosrand Nature Reserve, crossing the R551, to end at a junction with the R42 between Vereeniging to the south-west and Heidelberg to the north-east.