An oscillator is a device designed for oscillation.
Oscillator may also refer to:
Electronic oscillator Voltage-controlled oscillator, used in synthesizers Harmonic oscillator Oscillator (technical analysis), a method used in technical analysis of financial markets Oscillator (cellular automaton) Oscillator (EP), an EP by Information Society
See also Oscillation (differential equation) Oscillation (mathematics) Oscillation (album), a studio album by the Norwegian gothic metal band Trail of Tears Oscillistor, a semiconductor device