Deprogramming is a controversial tactic that attempts to help someone who has "strongly held convictions," often coming from cults or New Religious Movements (NRM). Deprogramming aims to assist a person who holds a controversial or restrictive belief system in changing those beliefs and severing connections to the associated group (religious, political, economic, or social) which created and controls that belief system.

Some methods and practices of people who have deprogrammed (deprogrammers) have involved kidnapping, false imprisonment, and coercion, which have sometimes resulted in criminal convictions. Some deprogramming regimens are specifically designed for individuals taken against their will, which has led to controversies over freedom of religion, kidnapping, and civil rights, as well as the use of violence, which is sometimes involved.