The screening of essential oils of castor (Ricinuscommunis), palmolive (Elaeisguineensis), groundnut (Arachishypogaea), coconut (Cocosnucifera), brassica (Brassica oleracea), sunflower (Helianthus annuus), Sesame (Sesamumindicum), Eucalyptus (Eucalyptus globulus), Neem (Azadirachtaindica), and Olive (Oleaeuropaea) for their effectiveness among the growth and Citrinin production by three strains of Aspergillus terreus was investigated. Neem oil, eucalyptus oil and olive oil were more effective inhibitors when compared to other oils. Based on the observations neem oil, eucalyptus oil and olive oil proved to be prospective bio-control agents for Aspergillus terreus and Citrinin production.