In-A-Gadda-Da-Vida is the second studio album by the American rock band Iron Butterfly, released in June 1968.

In a retrospective review for AllMusic, Stephen Thomas Erlewine calls the title track "the epitome of heavy psychedelic excess," and feels that the rest of the songs "qualify as good artifacts.

[4] All tracks are written by Doug Ingle, except "Termination", by Erik Brann and Lee Dorman.

It included material from newly discovered first-generation master tapes, bonus recordings, and a 36-page booklet with photos.

The deluxe edition also includes a new cover, similar to the original, but with a moving butterfly flapping its wings and the band members jamming to the song.