Little Isabella is a rustic water wheel, situated in Groudle Glen on the Isle of Man, that was originally built in 1893 with the arrival of the Manx Electric Railway to the glen. It has been dubbed the "Little Isabella" owing to its alleged resemblance to the Laxey Wheel in nearby Laxey which was opened in 1854 by Lady Isabella, the wife of the then Lieutenant Governor of the island. In its time the wheel has been used for various purposes, including pumping water to the Groudle Hotel (designed by Hugh Ballie-Scott) and providing power for the fairy lights that ran through the glen from the entrance to Lhen Coan, terminus of the Groudle Glen Railway.