The Ondioline is an electronic analog synthesizer, developed and built by Frenchman Georges Jenny. Sometimes referred to as the "Jenny Ondioline," the instrument is considered a forerunner of the synthesizer. First conceived by Jenny in 1939, he continued refining and reconfiguring the device, producing dozens of variant models up until his death in 1975.

An analog synthesizer is a synthesizer that uses analog circuits and analog signals to generate sound electronically.