Silver nanoparticles are important because of their unique physicochemical and biological properties. Conventional methods for the production of AgNPs are toxic and non-environmental friendly. Therefore, development of the eco-friendly methods for the synthesis of nanoparticles is essential for nanotechnology. The biosynthesis of AgNPs has gained much attention due to the development demand of environmentally friendly technology. Microorganisms are widely used for the green synthesis of Ag NPs such as bacteria, fungi, and plants. This work provides some recent researches on the green synthesis of AgNPs.