Brown rot may refer to the following diseases:

  • Wood-decay fungus, fungi that digest moist wood, causing rot, includes various species that infect living trees and cured wood
  • Ralstonia solanacearum, an aerobic, non-sporing, plant pathogenic bacterium that causes brown rot in a wide range of crops
  • Monilinia fructicola, a plant pathogenic fungus, the cause of brown rot in stone fruits, such as plums, peaches, nectarines and almonds
  • Gnomoniopsis castaneae, a plant pathogenic fungus causing brown rot in chestnuts
  • Almond brown rot caused by Monilinia fructicola