Kaori Iida (飯田 圭織, Iida Kaori, born August 8, 1981 in Hokkaidō, Japan) is a Japanese pop singer and actress, associated with Hello! Project and best known as a founding member of the girl band Morning Musume. She has also recorded with the Morning Musume side project band Tanpopo and is currently a solo artist. During her time in the group, she was the tallest member (168 cm), earning her the nickname "Kaorin" & "Kao-tan". She is currently a member of Dream Morning Musume.
Kaori Iida was one of 10 runners-up in a 1997 talent contest for a new Japanese rock idol. After the contest, musician and producer Tsunku offered Iida and four of the other runners-up (Natsumi Abe, Yuko Nakazawa, Aya Ishiguro, and Asuka Fukuda) the chance to be taken under his wing on one condition: that they sell 50,000 CDs of their song "Ai no Tane" in 5 days. The quintet accomplished that task in four and, thus, in 1997, Morning Musume was born (and their first official single "Morning Coffee" was released in 1998). The group has since been increasingly popular in Japan, has achieved a cult following in the Western world and is infamous for its fluctuation of memberships, with members "graduating" and joining frequently.