Delareyville is a salt mining, Transnet Agricultural Freight and commercial station, railway station for maize- and peanut-farming town situated in North West Province of South Africa. The town is 96 km south-west of Lichtenburg, 82 km north-east of Vryburg, 114 km north-west of Wolmaransstad, and 61 km north of Schweizer-Reneke.
It was laid out in 1914 and declared a border industry area in 1968. It was named after Jacobus Herculaas (Koos) de la Rey (1847-1914), General of the Boer forces in the Anglo-Boer War.
The area is known for the cultivation of maize, groundnuts, sorghum and sheep and cattle farming.
Salt is mined from the many pans in the area.