A louse is a wingless insect.

Louse may also refer to: __NOTOC__ Insects and other arthropods Gill louse, Ergasilus, a genus of parasitic copepod crustaceans Hog louse (disambiguation) Sea louse, the Caligidae, a family of ectoparasitic marine copepods Whale louse, the Cyamidae, a family of parasitic amphipod crustaceans Woodlouse, the Oniscidea, a suborder of terrestrial isopod crustaceans

Other uses Stone louse, a fictitious animal created by the humorist Loriot Louse Creek (disambiguation), various streams in the United States

See also Lice (disambiguation) Laos