Rainbow 7 (レインボー7) is the seventh album by the J-pop idol group Morning Musume.

It is the first album to feature 7th generation member Koharu Kusumi and first album after graduation of Kaori Iida and Rika Ishikawa and departure of Mari Yaguchi.

The album features the last single A-sides to feature founding member Kaori Iida and long-time members Rika Ishikawa and Mari Yaguchi, all of whom departed the band (Iida for a solo career, Yaguchi because of a scandal though she now works as a general entertainer, Ishikawa to focus on her new group V-u-den) in the months after their previous studio album, Ai no Dai 6 Kan, was released.

One of the singles represented, "Chokkan 2 (Nogashita Sakana wa Ōkiizo!

The limited edition version contained a 32-page photobook and had special packaging.