Nool may refer to: Nool - a Social Media app for personal growth and conversations within goal-based communities NOOL - An online library offering multi-lingual books Nool or Hydron, an enemy character from Red Earth Jungle of Nool, a fictional place in Horton Hears a Who!
People with the surname Erki Nool, decathlon gold medalist
See also Arul Nool, a holy script of Ayyavazhi