In an in uitro experiment the effect of three statins (atorvastatin [Sortis], simvastatin [Zocor], fluvastatin [Lescol]) on the growth of 5 bacterial strains Bacillus subtilis, Bacillus cereus, Proteus vulgaris, Pseudomonas fluorescens, Escherichia coli and 4 saprophytic actinomycetes Streptomyces longisporoflavus, Streptomyces intermedius, Streptomyces odoriver, Streptomyces viridis was tested. The experiments were carried out on solidified substrata with microorganisms covered with filter paper rings soaked with aqueous solution of every tested statin used in different concentrations. It was found that examined substances can inhibit the growth of certain saprophytic microorganisms. Fluvastatin rather than simvastatin or atorvastatin produces stronger effect on bacteria and actinomycetes.