Someries Castle (sometimes spelt Summeries castle) is a Scheduled Ancient Monument, in the Parish of Hyde, near the town of Luton, Bedfordshire, England. It was built in the 15th century by Sir John Wenlock. Although always referred to as a castle it was actually a fortified manor house. The castle closed to the public in February 2007 in order to make the structure safe and was surrounded by scaffolding, which damaged the original brickwork. It reopened in 2008.