A synthesizer or synthesiser is a collection of electronic devices that modify or manipulate an electronically generated musical tone or sound source.

Synthesizer or synthesiser may also refer to: Frequency synthesizer, an electronic system for generating any of a range of frequencies from a single fixed timebase or oscillator Video synthesizer, a device that electronically creates a video signal Speech synthesizer, an electronic device or computer program that produces human-like speech Synthesizer, a 2007 album by Information Society "Synthesizer", a 1998 song by Outkast from Aquemini "Synthesizer", a 2003 song by Electric Six from Fire "Synthesizer", a 2010 song by Mike Posner from 31 Minutes to Takeoff

See also Synth (disambiguation) Synthesis (disambiguation) Synthesizer Patel, a character in Look Around You played by Sanjeev Kohli