In science and engineering, sustainable nanotechnology is successful in giving solutions for the challenges in various sectors such as medicine, catalysis, industrial and agricultural activities.Due to the growing demand of nanoparticles, it is essential to build up synthetic methods which are profitable, environmentally sustainable and which can substitute with effective and competent technology to synthesis environmentally benign nanoparticles (NPs). Nanomaterials are “deliberately engineered” to direct the enhancement of special properties at the nanoscale. Nanoparticles have been known to be used for abundant physical, biological, and pharmaceutical applications. Nano-silver is the most studied and utilized nanoparticle. This review presents various synthesis methods of silver nanoparticles (AgNPAgNPs) and their application in different sectors.