The objective of the present study was to investigate the occurrence of major bacterial foodborne pathogens in swine on a subset of Ontario swine farms between 2005 and 2007" In total, 359 samples from manure storage tanks and fresh pooled feces obtained from finisher pigs, sows, and weanlings were collected and tested" Campylobacter, Salmonella, Y. enterocolitica, E coli 0157 and L monocytogenes were isolated from 36.5%, 31.5%, 5.8%, 3"3%, and 33% of samples, respectively. All E. coli O157 isolates were tested but none were determined to be E. coli O157:H7" Salmonella and Campylobacter were more likely to be detected from stored manure rather than fresh fecal samples. Y. enterocolitica tended to be detected more commonly from fresh samples than from manure pits.