Greenchild Amplification is a small-batch guitar pedal builder based in Martinez, Georgia, founded by engineer and former US Navy Surface Warfare Officer Melvin Greenchild. Every pedal is designed, assembled, tested, and hand-signed by the founder, and the brand's catalog focuses almost exclusively on gain-oriented stompboxes built with studio-grade components in the USA.

The company is best known for its dual-channel overdrive designs. The K818 pairs a Klon-inspired circuit with a Maxon OD-820-style drive in a single enclosure, while the G777 offers an original two-channel overdrive circuit with a wide dynamic range and an unusual EQ section featuring "Tilt" and "Focus" controls. Other models include the Klazo Drive, which uses a current-driven transconductance topology with floating diodes, the Tribus Drive, the Striker overdrive/compressor, the Valve Reaper, and the Mr. Boost — a clean boost with a bootstrapped power supply capable of 27 dB of gain.

Greenchild pedals are sold direct through the brand's website and via Reverb, Guitar Center, and independent boutique retailers, and have been reviewed by outlets such as Premier Guitar, Delicious Audio, and The Tone King.

Greenchild has 3 products cataloged on Equipboard, including Overdrive Effects Pedals.