George Dennis is a Czech manufacturer of guitar effects pedals and tube amplifiers, founded in 1991 by George Burgerstein after he spent over a decade working in the music business in Germany. The company is headquartered in Prague with manufacturing in Terlicko, Czech Republic. Pedal production began at the company's founding, with tube amplifier models added to the lineup in 1996.

The brand is best known for its expression-style pedals, particularly volume, wah, and combination treadle-based effects. Notable models include the GD20 volume pedal, the GD30 wah, the GD120 tremolo/volume, and multi-function units such as "The Tube" volume/distortion pedal and optical control sustainer/volume pedals. Many George Dennis effects use a dual-mode treadle design that allows a single pedal to perform two functions.

The company's amplifier line includes the Blue Beetle and other tube combos and heads for guitar and bass. George Dennis products are distributed primarily through European and independent retailers and have a following among players seeking affordable, hand-built alternatives to mainstream expression pedals.

George Dennis has 13 products cataloged on Equipboard, including Wah Pedals, Phaser Effects Pedals, and Volume Effects Pedals. Their gear is featured by 4 artists, with the strongest followings in Rock, Electronic, and Pop. Notable users include Omar Rodríguez-López, Charlie Megira, and Jim Davies.