Oberholzer is a town in West Rand District Municipality in the Gauteng province of South Africa. The town is 85 km south-west of Johannesb…Oberholzer is a town in West Rand District Municipality in the Gauteng province of South Africa. The town is 85 km south-west of Johannesburg, just north-west of Carletonville. Laid out on the farm Wonderfontein, it was proclaimed in March 1939 and named after the owner of the farm, Hendrik Oberholzer.