The first examples of polyaniline/polyphosphazene conducting composites with different ratios of the sulfonic or phosphonic acid functional polyphosphazenes and aniline were prepared in water via chemical oxidation of aniline with ammoniumperoxydisulfate by using in situ polymerization method. The novel conducting composites have been characterized by standard spectroscopic techniques; H-1 and P-31 NMR, FT-IR, and UV-vis spectroscopy. SEM and XRPD technics were used to investigate the surface and film properties and conductivity of the resulting polymer composites were investigated by four-point probe. Thermal behaviours and redox properties were also investigated by DSC, TGA and CV measurement. (C) 2016 Elsevier Ltd. All rights reserved.