The liver of mammals, fowl, and fish is commonly eaten as food by humans. Pork, lamb, veal, beef, chicken, goose, and cod livers are widely available from butchers and supermarkets while stingray and burbot livers are common in some European countries.

Offal, also called variety meats, pluck or organ meats, is the internal organs of a butchered animal. The word does not refer to a particular list of edible organs, and these lists of organs vary with culture and region, but usually exclude skeletal muscle. Offal may also refer to the by-products of milled grains, such as corn or wheat.