Prizmmy was a Japanese girl group formed by Avex Pictures in 2012. The group debuted through the Pretty Rhythm anime series, where they hosted the live-action segments in each episode and later released their first song, "Everybody's Gonna Be Happy", on 16 March 2012 as one of the ending theme songs to Pretty Rhythm: Aurora Dream. Fictionalized versions of themselves appeared as the main cast of Pretty Rhythm: Dear My Future to promote their activities.
After the end of the Pretty Rhythm series, Prizmmy continued to perform theme songs to the series' successor, PriPara, joined with the trainee group Prism Mates as back-up performers. As a collective group, they performed under the name Prism Box. After PriPara ended, the group disbanded on 31 March 2017.