Gold nanoparticles have been commonly made by a wet process from chloroauric acid or dry process using vacuum evaporation to solid surfaces. Here, we have shown a method to make gold particle from gold electrodes in potassium chloride solution by AC electrolysis and the following Turkevich method. The developed AC electrolysis method provides an environment-friendly process to produce gold particles from gold electrodes without using any strong acids such as aqua regia or hydrochloric acid.