The Stylophone is a miniature analog synthesizer played with a stylus. Invented in 1967 by Brian Jarvis, it entered production in 1968, manufactured by Dubreq in London. Some three million units were sold during its original run, mostly as children's toys, but it was also used by professional musicians such as John Lennon, Kraftwerk and David Bowie. The Stylophone was relaunched in 2007 by the toy company Re:, in partnership with a rebuilt Dubreq, and has since been released in several new models.

The Stylophone consists of a metal keyboard made of printed circuit board and is played by touching it with a stylus. Each note on the keyboard is connected to a voltage-controlled oscillator via a different-value resistor, and touching the stylus to the keyboard thus closes a circuit. The only other controls are a power switch and a vibrato control on the front panel beside the keyboard, and a tuning potentiometer on the rear.

The Stylophone was available in standard, bass and treble variants, with cabinet colors used to distinguish them. The standard model was black-and-white, the treble model was white and tuned an octave higher, and the bass model was beige-and-white and tuned an octave lower. The standard version was the most common. There was also a larger version called the 350S with more notes on the keyboard, various voices, a wah-wah effect that was controlled by moving the hand over a photosensor, and two styluses.

In the mid-1970s, a new model appeared that featured simulated wood on the speaker panel and a volume control. However, production of the Stylophone ceased in 1975.

Entertainer Rolf Harris served for several years as the Stylophone's advertising spokesman in the United Kingdom and appeared on many "play-along" records sold by the manufacturer.

In October 2007, 28 years after the Stylophone had ceased production, the toy company Re:creation, in partnership with Dubreq Ltd. (re‑formed in 2003 by Ben Jarvis, son of the original inventor), relaunched the Stylophone. The 2007 revival model, manufactured in China and officially called the S1, is a digital recreation that closely resembles the 1960s original but adds a volume control, audio throughput, and two additional sounds. The Bass, Treble, and 350S models from the 1970s were not included in the relaunch.

In September 2009, Dubreq released the Stylophone Beatbox, the first percussion‑focused Stylophone model. It departs from the traditional box‑shaped design of earlier Stylophones, featuring a circular case with a 13‑pad touch‑sensitive keypad. The instrument offers three sound banks (drum, vocal beatbox, and bass), a tempo control, and a basic record/loop function that allows short sequences to be captured and replayed.

In December 2012, Dubreq released the Series 2 Stylophone, a limited edition, British‑made, true analogue synthesizer.