Blight (disambiguation)

Blight may refer to:
 * Potato blight:
 * Late blight (Phytophthora infestans) - An oomycete or water mold that causes the serious potato disease
 * Early blight (Alternaria solani) - A fungal pathogen, producing a disease in tomato and potato plants
 * Black potato blight (Phoma andigena) - A fungal pathogen of potatoes only found at altitude in Peru.
 * Halo blight (Pseudomonas amygdali pv. phaseolicola) - a bacterial blight disease in legumes.
 * Phomopsis blight (Phomopsis spp.) - a genus of canker-producing plant pathogens.
 * Gummy stem blight (Didymella bryoniae) - a fungal plant pathogen, which attacks mature plants. A sunken brown canker appears at the base of the stem.
 * Phoma blight (Phoma spp.) - a genus of about 140 taxa of plant pathogenic species including P. exigua var. foveata (Gangrene) and P. terrestris (Pink root of onions).