Catarrh (disambiguation)
Catarrh is an inflammation of mucous membranes in one of the airways or cavities of the body. It can result in a thick exudate of mucus and white blood cells. Catarrh or catarrhal may also refer to:
 Catarrh, South Carolina, United States, a settlement
 Spring catarrh, a seasonal, warm-weather type of conjunctivitis (pink eye)
 Malignant catarrhal fever, a disease of cattle, sheep and other ruminants
 Catarrhal Noise, an Italian thrash metal band