Josias Eduard de Villiers (nicknamed Jos, Koelenhof, Stellenbosch, December 27, 1843 – Mosterthoek Farm, near Laingsburg, Western Cape, August 16, 1898) was a South African surveyor, politician, and amateur astronomer. He surveyed the first neighborhood in Johannesburg, Randjeslaagte. He predicted that Johannesburg would become a city rather than disappearing like other ghost towns (as most South African civil servants of the era did), and De Villiers Street there is named after him.