Ai Takahashi is a Japanese pop singer associated with Hello! Project, best known as a member of Morning Musume and its most popular subgroup, MiniMoni. She has one of the most distinct and recognizable voices in the group.

Ai Takahashi joined Morning Musume in 2001 as part of the group's fifth generation, along with Makoto Ogawa, Asami Konno and Risa Niigaki. Her debut appearance with the group was on their single "Mr.Moonlight ~Ai no BIG BAND~", and her first appearance on a Morning Musume full-length release was their fourth studio album, the appropriately named 4th Ikimashoi!. Her first appearance on a Hello! Project Summer Shuffle release was on the 2002 single "Shiawase Beam! Suki Suki Beam!" under the group name Happy 7.