Ainur may refer to:

• Ainur, a given name in several languages, such as Arabic, Kazakh and Albanian. The Turkish version of it is Aynur. It means "moonlight"
• AINUR (Atlas of Images of Nuclear Rings), catalogue of star-forming ring-shaped regions that circle certain galactic nuclei
• Ainu (Middle-earth) (plural: Ainur), spirits from J.R.R. Tolkien's fantasy legendarium
• Ainu people, of Japan and the Russian Far East

• Vathy
• Vathy, Greece
• Vathylakkos
• Vathypedo
• Vathypetro
• Vathy, Samos
• Vathy (Samos), Greece
• Vatica
• Vatica affinis
• Vatica badiifolia
• Vatica bantamensis
• Vatica bella
• Vatica brevipes
• Vatica brunigii
• Vatica cauliflora
• Vatica chartacea
• Vatica chinensis
• Vatica cinerea
• Vatica compressa
• Vatica congesta
• Vatica coriacea
• Vatica cuspidata
• Vatica diospyroides
• Vatica elliptica
• Vatica flavida