The Department of Law is one of the departments of Government of Tamil Nadu.

The basic objectives of the department are to prepare draft bills to implement policy decision of the government, action to publish laws/acts after passage in the legislative assembly, advise on legal issues referred to it by all the departments, response to statutory rules, notifications and orders wherein the state government are a party and litigation on behalf of the government.

[1][2] The following sub-divisions operate under the department:[3]