鳕科是海鱼的一种，为辐鳍鱼纲鳕形目的其中一科，包括15个属。鳕科包括了鳕鱼、明太、黑线鳕及 青鳕。江鳕属等6个属原属鳕科，现时已独立归入江鳕科。

鳕科下分13个属，如下：

The Gadidae are a family of marine fish, included in the order Gadiformes, known as the cods, codfishes or true cods. It contains several commercially important fishes, including the cod, haddock, whiting, and pollock.

Most gadid species are found in temperate waters of the Northern Hemisphere, but several range into subtropical, Subarctic and Arctic oceans, and a single (southern blue whiting) is found in the Southern Hemisphere. They are generally medium-sized fish, and are distinguished by the presence of three dorsal fins on the back and two anal fins on the underside. Most species have barbels on their chins, which they use while browsing on the sea floor. Gadids are carnivorous, feeding on smaller fish and crustaceans.