WO3 nanorods and wires were obtained throughout hydrothermal synthesis using sodium tungstate as precursor and either oxalic, citric or poly(methacrylic acid) as stabilizing agent. Transmission Electron Microscopy (TEM) images showed that the organic acids with different numbers of carboxylic groups per molecule influence on the final WO3 wires size and stacking nanostructures. Three-dimensional electron diffraction tomography (3D EDT) on a single nanocrystal revealed a hexagonal WO3 structure with a preferential growth along c-axis, and was confirmed by high-resolution transmission electron microscopy (HRTEM). WO3 nanowires were also spin-coated onto ITO/glass conducting substrate, resulting in a film formation that was characterized by scanning electron microscopy (SEM). Finally, cyclic voltammetry (CV) measurements performed on the WO3 thin film showed voltammograms typical for WO3 redox process.