A privacy policy is a statement or a legal document (in privacy law) that discloses some or all of the ways a party gathers, uses, discloses, and manages a customer or client's data. It fulfills a legal requirement to protect a customer or client's privacy. Personal information can be anything that can be used to identify an individual, not limited to but including name, address, date of birth, marital status, contact information, ID issue and expiry date, financial records, credit information, medical history, where one travels, and intentions to acquire goods and services.

In the case of a business it is often a statement that declares a party's policy on how it collects, stores, and releases personal information it collects. It informs the client what specific information is collected, and whether it is kept confidential, shared with partners, or sold to other firms or enterprises.