The Gallus Derby-Lux is a French-made compact film camera produced by Gallus, a Parisian manufacturer active in the mid-20th century. It belongs to the small-format category of cameras typical of European production in that era.

Hammer prices for the Derby-Lux at UK auction are scarce, with one recorded sale in 2004 reaching £119. With so little recent saleroom data through to today, the model's current value is difficult to pin down, and condition and completeness of original accessories are likely to swing what a clean example sells for.