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 Connecticut, Peeping Tom laws are addressed under the state's voyeurism statutes. Connecticut General Statutes Section 53a-189a makes it illegal to knowingly photograph, film, video, or otherwise record another person without that person's knowledge and consent while that person is in a situation where they have a reasonable expectation of privacy. This includes situations where a person is inside a dwelling or another building and not in plain view, and the recording is done for the purpose of sexual arousal or gratification. The law also covers situations where the person being recorded is a child under 16 years old, regardless of the intent of the person making the recording. Additionally, Connecticut law prohibits trespassing with the intent to peep into windows or doors of another person's dwelling (CGS Section 53a-108). The use of devices such as cameras, binoculars, or drones to commit acts of voyeurism can lead to more severe charges. Violations of these laws can result in serious criminal penalties, including imprisonment and fines, and are considered a felony or misdemeanor depending on the circumstances of the offense.