| Aiin Taisō | |
| Cover: | Ain_taisou.jpg |
| Type: | single |
| Artist: | Minimoni |
| Album: | Minimoni Song Daihyakka Ikkan |
| Released: | April 24, 2002 (JP) |
| Recorded: | 2002 |
| Genre: | Japanese Pop |
| Label: | Zetima |
| Prev Title: | Minimoni Hinamatsuri!/Mini Strawberry Pie |
| Prev Year: | 2001 |
| Next Title: | Genki Jirushi no Ōmori Song/Okashi Tsukutte Okkasi~! |
| Next Year: | 2002 |
is the fifth single of the Hello! Project subgroup Minimoni. It was released on April 24, 2002 and sold 212,230 copies.
This single was a collaboration with comedian Ken Shimura in his Baka Tono-sama persona, and was jointly credited to . A double A-side, its title tracks were both built around the interjection "Aiin!", which Shimura had already established as a catch phrase.
The lyrics to "Aiin Taisō" were written by Hiroyuki Tomonaga; its music was composed by Akihiko Takashima. "Aiin! Dance no Uta" was written and composed by Tsunku.[1]