Kirinyuh plant (Chromolaena odorata (L.) RM King & H. Rob.) is one of the plants used as traditional medicine that has antibacterial potential. This research aims todetermine the antibacterial potential of kirinyuh leaf extract (Chromolaena odorata) and determine the values of Minimum Inhibitory Concentration (MIC) and Minimum Killing Concentration (KBM) against Streptococcus viridans bacteria.…