The Manor of Northstead is a former medieval estate in North Yorkshire, England. The manor house no longer exists, and the land has since been redeveloped and forms part of modern-day Scarborough, in the area of Peasholm Park and Scarborough Open Air Theatre. The ancient title of the Crown Steward and Bailiff of the Manor of Northstead persisted beyond the manor, however, being used since the 19th century as a sinecure post which plays a role in the procedure for effecting resignation from the British House of Commons.