"Summer Reggae! Rainbow" (サマーれげぇ！レインボー) is the single released by the 2001 Hello! Project Shuffle Unit 7nin Matsuri. It was released on July 4, 2001. The single reached #6 on the weekly Oricon charts and charted for eight weeks, selling 226,190 copies. It also reached #86 on the yearly Oricon charts for 2001.