In/Casino/Out (stylized as in/CASINO/OUT) is the second studio album by American post-hardcore band At the Drive-In, released on August 18, 1998, through Fearless Records. Produced by Alex Newport, it is the band's first full studio album to feature bass guitarist Paul Hinojos and drummer Tony Hajjar, who joined the band in 1996 for the tour in support of their debut album, Acrobatic Tenement.

In/Casino/Out is a live-in-studio album, recorded as such with the intention of better capturing the energy and sound of the band's live shows. The album marks a middle ground between the raw, lo-fi production of Acrobatic Tenement and the sleeker, more produced sound subsequently heard on their third album, Relationship of Command.

In 2016, Rolling Stone placed the album at #20 in their "40 Greatest Emo Albums of All Time" list.