This study highlights the synthesis of silver nanoparticles using whole plant extracts of Clitoria ternatea. Antibacterial activity of silver nanoparticles was assessed by using disc diffusion method against Bacillus subtilis, Staphylococcus aureus, Escherichia coli and Klebsiella pneumoniae, since Bacillus species and S. aureus strains may cause diarrhoea and an enteropathogenic form of E. coli, and Klebsiella species may cause food poising. The results of this study clearly indicate that silver nanoparticles synthesized from plant extracts of Clitoria ternatea has many pharmaceutical applications for the control of deadly pathogens