Ai Kago (加護 亜依, Kago Ai, born February 7, 1988 in Yamatotokada, Nara, Japan) is a former member of Hello! Project, a Japanese pop collective. Debuting as a fourth generation member of Morning Musume, she later became a founding member of Mini Moni and sub-leader of the duo W before being expelled from Hello! Project in 2007.