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 Utah, Peeping Tom laws are addressed under the state's criminal statutes concerning voyeurism. Utah Code § 76-9-702.7 defines the crime of voyeurism, which is a class A misdemeanor. It is illegal to intentionally view, or attempt to view, another person without that person's knowledge and consent while the person being viewed is in a place where he or she would have a reasonable expectation of privacy. This includes situations where the person is nude or in a state of undress. The law also covers the use of any electronic equipment such as cameras, video cameras, or drones to commit the act of voyeurism. Additionally, if the offense is committed against a child under 14 years of age, it is classified as a third-degree felony. Utah's approach to Peeping Tom laws reflects a concern for privacy and the protection of individuals from unwanted surveillance, particularly in situations where they expect privacy.