- Nark redirects here. For other uses of narc or nark, see NARC.
A narc, also spelled nark, (a contraction of "narcotic agent") is a term for a narcotics agent or police informant who provides information to the police about drug offenders. It is often used to refer to undercover agents, rather than police officers. Some drug offenders, once caught, turn into informants as part of an agreement with the police to avoid charges.
