Fake passport is a counterfeit of a passport (or other travel document) issued by a nation or authorised agency. Such counterfeits are copies of genuine passports, or illicitly modified genuine passports made by unauthorized persons, sometimes called cobblers. Its purpose is to be used deceptively as if it were a legitimate travel or identity document. A passport obtained from an authorized issuer by providing false information may also be considered fake.
Other comparable documents include camouflage passports, which are not copies of a valid form of document, but are designed to look like a passport issued by a body that cannot issue legitimate passports, such as "Republic of Mainau", or a "Baltic Trade Mission" diplomatic document. Fantasy passports, such as the World Passport, are passport-like documents issued by non-official organizations or micronations as a novelty or souvenir, to make a political statement, or to show loyalty to a political or other cause.