The Levin LT-18 is an Acoustic Guitar used by Syd Barrett and David Gilmour.

The Levin LT 18, introduced around 1963 as a successor to the LS 18, is a non-cutaway guitar designed in the Goliath size, featuring a spruce top with X-bracing, flame maple back and sides, and a mahogany bolt-on neck with an adjustable truss rod. It has a scale length of 630 mm and a fingerboard width of 43 mm. The instrument is crafted with a 4-ply bound top and single-bound back an ebony fingerboard with pearloid block inlays on the bass side, and an ebony bridge.