The aim of this work was to evaluate the antimicrobial activity of the volatile oil obtained through hydrodistillation and the extracts obtained through maceration, infusion and decoction extracted from Pinus Pinaster on the bacterium Streptococcus sp. The antimicrobial activity against the bacterium streptococcus sp was investigated by the agar diffusion method using disks. The oil yield was low, but sufficient to investigate the antimicrobial activity...