The Archtop Guitar (archtop gətɑ́r) is an acoustic or semi-acoustic steel stringed guitar that takes its name from its distinctive curved or arched top. The design is credited to Orville Gibson, whose 1898 patent for a mandolin included design specifications and construction techniques also applicable to guitars. The design incorporates a violin style arched top and back, each carved from a single block of wood that creates a need for internal bracing, f-holes on the stomach, a stoptail or moveable bridge and a tailpiece.

The distinctive rich tone of these guitars made them particularly suited to electrification, and they quickly became staple instrumental accompaniments in the Big Bands and Swing Bands of the 1940s. The archtop fell out of style in Pop music for a time, but has seen a revival since the 1990s, and have remained popular with jazz and blues musicians since their inception in the early 1900s.