The X-301 Experimental Fighter is a fictional spacecraft in the science-fiction television show, Stargate SG-1. The X-301 fighter visually resembles a cross between a Goa'uld Deathglider and a Nighthawk Stealth Fighter (F-117).

Initially seen in the Season 4 episode Tangent, the X-301 was Earth's first attempt to duplicate Goa'uld technology. The initial design of the craft used some components directly from a Deathglider which almost proved fatal to its passengers when a preprogrammed booby trap sent the craft into outer space during a test flight. It did, however, pave the way for the development of the X-302 and X-303.