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Prevalence and antimicrobial resistance profiles of Salmonella serotypes, Campylobacter and Yersinia spp. isolates from fresh chicken and beef meat obtained at retail outlets in Tehran, Iran, were determined. A total of 379 samples (190 chicken and 189 beef) were collected between April 2006 and April 2007 and analyzed for these foodborne pathogens, and isolates were subjected to antimicrobial resistance testing. Salmonella, Campylobacter and Yersinia were isolated from 124 (33%), 109 (29%) and 60 (16%) of the samples, respectively. S. Thompson was the dominant serovar of Salmonella, isolated from 75% to 58% of the Salmonella-positive chicken and beef samples, respectively, with S. Hadar a distant second. Of Campylobacter isolates, 71% were resistant to nalidixic acid and 47% to ciprofloxacin, with 37 (40%) multidrug resistant. A high percentage of Salmonella isolates were resistant to antibiotics …