Abstract: The dilution-plate method was used to enumerate and isolate fungi in soil samples of both wilted and healthy banana plants. Fungal propagules in the soil of wilted plants were as much as twice of those in healthy ones. Aspergillus, Penicillium and Fusarium were the most common genera in both soils, and also their counts were higher in soil of wilted plants. Aspergillus flavus, A. niger, Penicillium chrysogenum and Fusarium oxysporum were the prevalent species in both soils. It is noteworthy that F. oxysporum, the causal agent of Panama disease constituted about 4.4% of the total propagules in the soil of wilted plants while it constituted only 1.2% of those of healthy ones. Some other fungi were dominant in either soil. Four species of Fusarium were found associated with the diseased plants, and only F. oxysporum was isolated from all wilted tissues examined. When the isolated Fusarium species were tested for cellulase production, 16 out of 18 isolates were capable of producing cellulase. Of these, 7 isolates were high cellulase producers (4 of F. oxysporum, and 1 of each of F. avenaceum, F. solani and F. verticillioides). Key words: Banana wilt, soil fungi, Fusarium, cellulase.