In vitro screenings of wild medicinal plants are quite important for their antibacterial properties against some clinically isolated pathogens as an alternative source of antimicrobial agents. Thus their antibacterial activity may opens the possibility of finding new clinically effective antibacterial substances as a drug, as an alternative way of use of natural products instead of antibiotics and therefore, decreasing the drug resistance. In many situations, use of antibiotics was banned. In such cases, use of medicinal plants with potent antimicrobial property could be an alternative source of medicine.