Porterville is a town in the Western Cape province of South Africa. The town is located at the foot of the Olifants River Mountains, 27 km south-east of Piketberg and 155 km north-east of Cape Town. It is situated 140 km north of Cape Town on R44 road at the base of the Olifants River mountains. The Dasklip Pass to the surrounding Groot Winterhoek mountains is located 14 km outside of the town. The Soom Shale, a notable deposit of Late Ordovician era fossils, is located near the town.