Ten entomopathogenic fungi were recorded naturally associated with cabbage aphid. They were five hyphomycetes and five Zygomycetes (four Entomophthorales & one Mucorales). Six genera showed good epizootic beside their safety to plants. They were: Panadora neoaphidis, Conidiobolus obscurus, Neozygites fresenii, Entomophthora planchoniana, Cladosporium cladosporioides and Verticillium lecanii. Efficiency of these entomopathogenic fungi against Brevicoryne brassicae was evaluated under laboratory conditions. P. neoaphidis was the most efficient with LC₅₀: 2.5417x 10² conidia/ml then, V. lecanii which showed LC₅₀ of 3.052x10² conidia/ml followed by C. obscurus which showed LC₅₀ of 3.161×10² conidia/ml, then, N. fresenii which recorded LC₅₀ of 8.536×10² conidia/ml. Then, C. cladosporioides showed LC₅₀ of 23.271×10² conidia/ml, then at last comes E. planchoniana with LC₅₀ of 70.593×10².