Dai Hakken (大発見; literally great discovery) is the fifth studio album by Japanese rock band Tokyo Jihen, released on June 29, 2011[1] in Japan through EMI Music Japan and Virgin Music.

The album was produced by the band and Japanese recording engineer Uni Inoue.

Ringo Sheena's tradition of symmetrically matching song titles written in Kanji, Hiragana and Latin characters throughout the album, however, was broken for this record.

Credits adapted from Ringo Sheena's website.

[2] All lyrics are written by Sheena except "Regardez-moi" by Ukigumo; all tracks arranged and performed by Tokyo Jihen except "Fly Me to Heaven" arranged by Takayuki Hattori and performed by the Tokyo Magical Big Band