Laxton Castle is a late 11th- or early 12th-century medieval castle located north of the village of Laxton in Nottinghamshire, England. According to an early 20th-century report by the British Archaeological Association, the site is notable not only as "the most striking specimen of a mount and court stronghold" in the area, but also for "the nearly perfect condition of its two courts", which made of it a valuable resource for study.