|This article is about a/an transformation device in Kamen Rider Agito.|
The Alter Ring (オルタリング Oruta Ringu) is a mysterious belt bestowed upon Shouichi by the Overlord of Light. It holds the "Seed of Agito" and is the source of his power. As he grows in strength, he would unlock its full powers. The Alter Ring has 2 forms, one for Agito's Dragon Eye forms and a powered up version for his Burning and Shining forms.
- Bandai's toy version of the Alter Ring was called the "Triple Flash DX Henshin Belt".