Derby is a small town situated in North West Province of South Africa that was named after the British Secretary of State Lord Derby. Derby began as a refuge for destitute people.

Village 117 km west-north-west of Johannesburg, 60 km south-west of Rustenburg and 17 km east of Koster. Laid out on portions of the farms Rietfontein and Vlakfontein, it was named after Lord Derby, British Secretary of State.