In justice and law, house arrest (also called home confinement, home detention, or, in modern times, electronic monitoring) is a measure by which a person is confined by the authorities to their residence. Travel is usually restricted, if allowed at all. House arrest is an alternative to being in a prison while awaiting trial or after sentencing.

While house arrest can be applied to criminal cases when prison does not seem an appropriate measure, the term is often applied to the use of house confinement as a measure of repression by authoritarian governments against political dissidents. In these cases, the person under house arrest often does not have access to any means of communication with people outside of the home; if electronic communication is allowed, conversations may be monitored.