Seventy samples of retail packages of frozen ground beef were subject ed to mycological examination. The total mould count per gram ranged from 102 to 4x10 and the yeast count from 102 to 4x10. Twelve mould and eleven yeast genera could be isolated and identified, the predominant mould genrea were, Penicillium, Mucor, Aspergillus, Clados porium and Geotrichum, while the predominant yeast genera were; Torulopsis, Rhodotorula, Candida, Debaryomyces and Saccharomyces. The isolated mould and yeast genera were further identified, and the significance of occurrence of such microorganisms were discussed.