Conducting poly(o-toluidine) (POT)/titanium dioxide (TiO2) nanocomposite have been synthesized by in situ chemical oxidation polymerization of o-toluidine in the presence of TiO2 nanoparticles. The various composites were synthesized by changing the percentage load of titanium dioxide nanoparticles in poly-ortho-toluidine matrix. The synthesized nanocomposites were characterized by using Scanning electron microscopy (SEM), X-Rays diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The POT/TiO2 nanocomposites were further employed to evaluate the photocatalytic potential of the composite materials towards reactive violet 1.