Scanner may refer to:

Technology

For invisible radiation

Scanner (radio) A scanner (also referred to as a radio scanner) is a radio receiver that can automatically tune, or ''scan'', two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the ...

, for searching for and receiving radio broadcasts * Scanner, a rotating radar antenna *

Neutron scanner The neutron scanner technology is non-intrusive used to minimise the impact of security measures on rapid freight movement. The main advantage of the Scanner over current and potential new scanners is its ability to accurately and rapidly analyse ...

, a scanner which utilizes neutrons to analyze objects

For (near) light

* Image scanner, which digitizes a two-dimensional image **

3D scanner 3D scanning is the process of analyzing a real-world object or environment to collect data on its shape and possibly its appearance (e.g. color). The collected data can then be used to construct digital 3D modelling, 3D models. A 3D scanner can ...

, which digitizes the three-dimensional shape of a real object * Motion picture film scanner, which scans original film for storage as a digital file * Barcode reader, which reads the data encoded in a barcode * Laser scanner, which guides a laser beam along a path, sometimes combined with a measurement * Stepper, a part of the photolithography process * Scanner, an automated stage lighting#Spotlights, stage light

Security

* Biometric device, a security identification and authentication device ** Face scanner ** Iris scanner ** Retinal scanner ** Fingerprint scanner * Full body scanner

Computing

* Port scanner, in computer networking * Virus scanner * Vulnerability scanner, a computer program that probes for weaknesses * Lexical analyzer, a computer program * Scanner (software), a disk space analyzing and management tool for Microsoft Windows

Medical

* CT scanner * MRI scanner * PET scanner * X-ray scanner

Other

* Scan tool, an automotive electronic control unit diagnostic tool

Arts and entertainment

* Scanner (band), a German speed metal band * Scanners (band), an alternative band from London * "Scanners Live in Vain", science fiction story written in 1945 by Cordwainer Smith * Scanner, the stage name of British electronic musician Robin Rimbaud * Scanner (Code Lyoko), a fictional teleportation device * Scanner (Half-Life), Scanner (''Half-Life''), a floating enemy in the ''Half-Life'' video game series * ''Scanners'', a 1981 science fiction horror film * Scanners (Superstore), "Scanners" (''Superstore''), an episode of the television series ''Superstore''