Alternaria leaf spot of cauliflower occurs worldwide but is more prevalent in subtropical and temperate areas. The samples of cauliflower showing the symptoms of Alternaria blight were collected from the experimental farm of the college and the fungal pathogen was isolated. The fungus was identified as Alternaria brassicicola on the basis of cultural and morphological characters. Eight different fungicides were evaluated against the mycelia growth of A. brassicicola and found that azoxystrobin 25%, azoxystrobin 20% + difenconazole 12.5%, zineb 68% + hexaconazole 4%, metiram 55% + pyraclostrobin 5%, difenconazole and hexaconazole were most effective with complete inhibition in the mycelia growth of the fungus. The fungicides were further evaluated for the management of Alternaria blight as foliar spray on the cauliflower plants raised in pots and inoculated with the pathogen. Zineb + hexaconazole, hexaconazole and azoxystrobin + difenconazole were found most effective to manage the disease effectively with 30.00, 37.00 and 40.33 per cent disease index, respectively compared to 79.00 per cent disease index in un-treated control. The fungicides also significantly increased the plant weight compared to 0.2 g in control with highest weight of 5.0 g in zineb + hexaconazole followed by 4.25 g and 3.25 g with hexaconazole and azoxystrobin + difenconazole, respectively.