Kerelaw Castle is a coastal Scheduled Monument in Stevenston, North Ayrshire, Scotland, with three surviving walls in varying states of preservation. Traditionally held by the Lockhart family from the late 12th century until partial destruction prior to 1488, the castle later became an important seat of the Earls of Glencairn and passed through the hands of the Campbells, Cunninghames, Boyds, and Hamiltons. Featuring an early 16th-century quadrangular design with central courtyard and Gothic windows inspired by Kilwinning Abbey, the castle was converted to a garden folly around 1830. Heritage trail plaques and interpretation boards mark the site following recent conservation work in 2014.