The G-400 (or sometimes G400) is an Epiphone solid body electric guitar model produced as a more modestly priced version of the famous Gibson SG.

Currently, Epiphone is a subsidiary of Gibson and manufactures the G-400 and other budget models at a lower cost in Asia.

Upon introduction, it featured dot fretboard inlays, two open-coil humbuckers, green key tuners with the Epiphone logo stamped on their backs, a differently shaped truss rod cover with "Gibson" printed vertically, black "speed" knobs, and "narrow-open Book" headstock.

In 2005, Epiphone began putting thin veneers of African mahogany on the front and back of the Cherry finished G-400s.

[1] The G-400 is available in many models, including G-400, Pro, Deluxe, Deluxe Flametop, Custom, Vintage, '66 Limited edition, SG Special, Tony Iommi Signature, Gothic and an Alpine White EMG pickup outfitted Limited Edition, the latter of which is very rare.