We report a novel and simple one step method for the synthesis of spherical gold nanoparticles (SGNPs) by the reduction of gold (III) chloride trihydrate (HAuCl₄) through a surfactant free single step method. High resolution transmission electron microscopy (HRTEM) was evaluated to depict the morphology of SGNPs. TEM images reveal the homogeneous spherical gold nanoparticles formation. The average diameter of single SGNPs was calculated to be ∼2.5 – 5 nm. In addition, the existence of gold nanoparticles was investigated by X-ray photoelectron spectroscopy (XPS) and UV-visible spectroscopy studies. Also, Surface plasmon resonance peak of SGNPs recorded via UV-visible spectroscopy. We expect the method introduced in our work may be more useful for the large-scale synthesis of gold nanomaterials and for multifunctional applications.