Gold nanoparticles were synthesized from chloroauric acid using the red wine of two types. The synthesis was carried out at room temperature. The optical absorption spectrum of the obtained gold nanoparticles was studied by using a UV-visible spectrophotometer, and the structure and particle sizes – by a transmission microscope. It was found that the geometric shapes of nanoparticles depended on the concentration of the working solution and the reducing agent. Nanoparticle size distribution histograms were plotted and assessed. The applications of obtained results were defined.