Legal ethics encompasses an ethical code governing the conduct of persons engaged in the practice of law and persons more generally in the legal sector.

In the United States

"Legal ethics" in the United States is generally understood to primarily apply to lawyers, while codes of professional responsibility also apply in a derivative sense (indirectly) to non-lawyers who work with lawyers, such as paralegals or private investigators. In the United States, the practice of law is regulated by the governments of the individual states and territories. As a whole, federal law does not control legal ethics.

Each state or territory has a code of professional conduct dictating rules of ethics. These may be adopted by the respective state legislatures and/or judicial systems. The American Bar Association has promulgated the Model Rules of Professional Conduct which, while formally only a recommendation by a private body, have been influential in many jurisdictions. The Model Rules address many topics which are found in state ethics rules, including the client-lawyer relationship, duties of a lawyer as advocate in adversary proceedings, dealings with persons other than clients, law firms and associations, public service, advertising, and maintaining the integrity of the profession. Respect of client confidences, candor toward the tribunal, truthfulness in statements to others, and professional independence are some of the defining features of legal ethics.

Law schools in the United States are required to offer a course in professional responsibility, which encompasses both legal ethics and general matters of professionalism that do not present ethical concerns.

Enforcement