White mold caused by Sclerotinia sclerotiorum is one of the most destructive diseases of French bean (Phaseolus vulgaris L.), leading to severe yield losses under favourable conditions. The present investigation was undertaken to evaluate the in vitro efficacy of selected fungicides against S. sclerotiorum with the objective of identifying the most effective fungicide for managing the disease. Six fungicides, viz. azoxystrobin 45% + chlorothalonil 40%, copper oxychloride 50% WP, mancozeb 75% WP, thiophanate methyl 70% WP, chlorothalonil 75% WP and hexaconazole 5% EC (considered as check), were tested at three concentrations (0.10, 0.20 and 0.30%) against the pathogen S. sclerotiorum using the poisoned food technique. Among the fungicides, azoxystrobin 45% + chlorothalonil 40% recorded complete (100%) inhibition of mycelial growth at all concentrations, followed by thiophanate methyl (57.78 %) and mancozeb (56.67%). Moderate inhibition was observed with chlorothalonil (54.44%), copper oxychloride (65.56%), and hexaconazole (70.00%). The strong inhibitory effect of azoxystrobin-based fungicide corroborates earlier reports on disruption of mitochondrial respiration in S. sclerotiorum. The study highlights the potential of the effective chemical for the management of white mold of French bean and provides baseline information for further validation under field conditions.