The Kamera Werkstatten Reflex Box is a medium-format reflex camera produced by the German maker Kamera Werkstatten (KW) of Dresden. It was introduced in the 1930s as a simple box-form reflex aimed at amateur photographers seeking a waist-level viewing experience without the cost of a full SLR.

At recent UK auction, hammer prices for the Reflex Box have ranged from about £31 to £210, with the two recorded results averaging near £120. With only a small number of saleroom appearances, what this camera is worth today varies sharply with cosmetic condition and whether the shutter and mirror are functional, so a clean, working example sells for considerably more than a tired one.