The Salmonella isolates recovered on 61 Ontario swine farms within the time period 2001-2006 were tested for antimicrobial susceptibility. No resistance was determined to amikacin and ciprofloxacin and only one nalidixic acid resistant isolate was recovered in 2001. Only 1% of the isolates were resistance against ceftiofur, ceftriaxone, apramycin, apramycin, cephalothin, amoxicillinlclavulanic acid, cefoxitin, and gentamicin.