The Naryn Castle (In Persian: نارین قلعه) or Narin Castle is a mud-adobe fort or castle in the town of Meybod, Iran. Built some 2,000 to 6,000 years ago, it has four towers and stands 40 meters (130 ft) high and contained a plumbing system.

Naryn (or Narenj) Castle is common language for Mehrjerd Castle.