3nin Matsuri (三人祭; Three-Person Festival; pronounced Sannin Matsuri) was one of the 2001 Hello! Project Shuffle Units alongside 7nin Matsuri and 10nin Matsuri. The theme of the group was said to be overwhelming cuteness.
APPEARANCES +
Hello! Project
ハロー!プロジェクト シャッフルユニット メガベスト
2008, CD, Album, Comp + DVD-V, Zetima, 
,
, J-pop/Pop Rap/Bossa Nova/Enka
Various
Hello!Project 2002～今年もすごいぞ!～
2002, DVD-V, Hachama,
Various
BMG Hits Attack 2001.08
2001, CD, Comp, Promo, Smplr, BMG Taiwan, 
,
, Contemporary R&B/Neo Soul/Ballad/Latin Pop/J-pop
ハロー！プロジェクト*
プッチベスト2～三・7・10～
2001, CD, Album, Comp, Zetima
Hello! Project
ザ・三・7・10人祭
2001