Steinberger is a series of distinctive electric guitars and bass guitars, designed and originally manufactured by Ned Steinberger. The name "Steinberger" can be used to refer to either the instruments themselves or the company that originally produced them. Although the name has been applied to a variety of instruments, it is primarily associated with a minimalist "headless" design of electric basses and guitars.

An electric guitar is a guitar that requires external amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar. It uses one or more pickups to convert the vibration of its strings into electrical signals, which ultimately are reproduced as sound by loudspeakers. The sound is sometimes shaped or electronically altered to achieve different timbres or tonal qualities from that of an acoustic guitar via amplifier settings or knobs on the guitar. Often, this is done through the use of effects such as reverb, distortion and "overdrive"; the latter is considered to be a key element of electric blues guitar music and jazz, rock and heavy-metal guitar-playing. Designs also exist combining attributes of the electric and acoustic guitars: the semi-acoustic and acoustic-electric guitars.