The Millennium Eye (千年眼 Mireniamu Ai; or 千年眼 Sennengan in the Millennium World arc) is one of the Millennium Items.

The Millennium Eye was created 3,000 years (5000 in the English Dub) prior with other Millennium Items by Aknadin. After its creation, Aknadin himself put on the Eye, sacrificing his left eye in the process, either wishing for his son Seto to become pharaoh (which was impossible due to Seto's birth status) in the manga or to ward off Zorc Necrophades in the anime. It was later used to summon Zorc Necrophades.