<p>Electrochromism is the process of changing a material’s optical glaze from coloured to bleached and vice versa by applying a reversible voltage. It is worth noting that across all transition metal oxides, tungsten oxide (WO₃) has acquired a prime focus owing to its versatile electrochromic properties. High coloration efficiency, high diffusion coefficient (<i>D</i>), high cyclic stability, high optical modulation, and fast switching time are few properties which makes WO₃, a versatile electrochromic material. Over the years, many scientists and researchers have been encouraged to extravagant their work on WO₃, to realise its hidden electrochromic persona. Various nanostructured forms of WO₃ have been studied till now. Every form of WO₃ film defines a different electrochromic capability. In this review we try to portray versatility of various nanostructured forms of WO₃ such as nanowires, nanorods, nanotrees, nanoflowers, nanoflakes, and nanoporous films towards acquiring electrochromic state of the art.</p>