Peeping Tom laws—also known as voyeurism laws or invasion of privacy laws—generally make it illegal and a criminal offense to peek into windows or doors on private property to view a person who is fully or partially naked for the purpose of sexual desire or gratification.

Peeping Tom laws vary from state to state and some states require that the victim not realize he or she was being viewed and that the victim had a reasonable expectation of privacy (was in a place where it was reasonable to expect privacy). And some states specifically address the use of unmanned aircraft (drones), cameras, video cameras, and binoculars in connection with such peeping. Some state statutes specifically prohibit peeking into bathrooms, dressing rooms, showers, and baths. And some states characterize this criminal offense as trespassing with the intent to peer or peep.

Peeping Tom laws are located in a state’s statutes—often in the penal or criminal code.

In Hawaii, Peeping Tom laws are addressed under the state's invasion of privacy statutes. Hawaii Revised Statutes Section 711-1111 makes it a misdemeanor to commit the offense of 'Violation of Privacy in the First Degree' when a person intentionally or knowingly installs or uses, in a private place without consent, any device for observing, recording, amplifying, or broadcasting sounds or images of another person within that place. This includes situations where a person might be undressed or engaging in intimate activities where they have a reasonable expectation of privacy. The law also covers the use of devices like drones, cameras, and other technology to commit acts of voyeurism. Additionally, Hawaii's laws make it illegal to trespass on private property with the intent to engage in such voyeuristic activities. The state's approach to Peeping Tom offenses reflects a broader concern for personal privacy and the protection of individuals from unwanted surveillance and observation, particularly in places where they expect privacy such as bathrooms, dressing rooms, and similar areas.