Inspired by these findings, there is significant potential for synthesizing ZnO nanoparticles with a unique morphology and size, specifically using green synthesis methods for biological and environmental remediation applications. This study focuses on bio-synthesizing zinc oxide nanoparticles (ZnO NPs) using black tea. Black tea mainly comes from camellia sinensis var. assamica, which is primarily cultivated in India. For this investigation, the black tea chosen was "Lipton® black tea decaffeinated" which is sold as a tea bag. The antibacterial activity of the synthesized ZnO NPs was then tested against selected bacterial strains, for their broad spectrum antibiotic activity.