The present study was undertaken to evaluate the in vitro antibacterial activity of seventeen genotypes of Coriander leaves and seeds collected from Tarai and Kumaun regions of Uttarakhand state of India. The methanolic extracts of leaves and seeds genotypes were screened against four human pathogenic bacterial strains; Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, Salmonella typhi at four different concentrations.