State law refers to the law of a federated state, as distinguished from the law of the federation of which it is a part. It is used when the constituent components of a federation are themselves called states. Federations made up of provinces, cantons, or other units use analogous terms like provincial law or cantonal law.

State law may refer to:

State law (Australia) State law (Brazil) State law (Germany) State law (India) State law (Mexico) State law (Nigeria) State law (United States) State law (Venezuela)

See also State act (disambiguation)