Informant (disambiguation)

An informant is a person who provides privileged information to an agency.

Informant may also refer to:


 * Informant (linguistics), a native speaker who provides information about their language for linguistics study
 * Informant (psychiatry), a third party who can report on a psychiatric case for a doctor
 * Informant (statistics), the gradient of the log-likelihood function, also known as the score (function).