Much work has been carried out based on the synthesis of plants and their nanoparticles mediated by extracts. Metalbound nanoparticles are typically synthesized by wet chemical methods, where the chemicals used are quite often toxic and flammable. In this study, we describe a cost-effective and environmentally friendly technology for the green synthesis of silver nanoparticles from a 1 mM AgNO3 solution via Sansevieria roxburghiana leaf extract, which acts as a reducing agent as well as a styling agent. The nanoparticles were characterized by UV–Vis absorption spectroscopy and SEM analysis showed a dense polydispersed spherical shape with an average particle size range of 14 to 41 nm. The synthesized silver nanoparticles showed potential antibacterial activity against several bacteria and fungi.