ZnWO4, PPy, and PPy/ZnWO4 nanoparticles were prepared using chemical synthesis. The structural, compositional and morphological properties of the prepared samples have been investigated using XRD, FTIR, SEM, and HRTEM respectively. The powder XRD reveals the monoclinic wolframite structure for both ZnWO4 and PPy/ZnWO4 nanocomposite. SEM confirms the wrapping of ZnWO4 with PPy. The electrodes of ZnWO4, PPy, and PPy/ZnWO4 have been tested as bifunctional electrocatalyst towards HER and OER using constant current chronopotentiometry (CP) and Linear Sweep Voltammetry (LSV). The electrochemical surface area and the electrocatalytic activity PPy/ZnWO4 nanocomposite towards HER and OER are greater than that of pure ZnWO4 and PPy. The Tafel slope of PPy/ZnWO4 nanocomposite is 76 and 84 mV dec(-1) in 0.5 M H2SO4 and 1 M KOH at room temperature for HER and OER respectively. The results suggest that PPy/ZnWO4 nanocomposite is a good candidate for the bifunctional electrocatalyst for water splitting. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.