Essential oils were extracted fromMajorana syriaca, Satureja thymbra, Micromeria fruticosa, andSalvia triloba, and their volatile fractions were tested for their antifungal activity against the soil-borne pathogensFusarium oxysporum andMacrophomina phaseolina and the foliar pathogensBotrytis cinerea andExserohilum turcicum. Results showed a fungistatic effect of 1, 2.5, and 5μl of the various essential oils on fungal mycelium growth. The most significant effect was exerted by essential oils extracted fromM. syriaca, which inhibited the growth ofB. cinerea by 44% and of all the other fungi tested by 100%.