The work aimed to evaluate the antibacterial activity of Phragmanthera capitata (Loranthaceae) extracts harvested from 03 host plants (Psidium guajava, Cirus sinensis and Theobroma cacao) traditionally used in the treatment of a wide spectrum of diseases. The phytochemical screening of the extracts was determined using standard reference methods. The antibacterial activity of the extracts was evaluated by disk diffusion and liquid microdilution methods on 07 bacterial isolates. Qualitative phytochemical analysis indicated the presence of flavonoids, tannins, sterols, phenols and polyphenols in all extracts of P. capitata. The evaluation of the antibacterial activity showed that the extracts from the stems and haustoria of P. capitata collected from the three host plants are more active than the leaves for all the strains tested. This study shows that P. capitata despite its pernicious character could be a source of useful compounds for the fight against bacterial diseases.