Indian War Whoop is the third studio album by the psychedelic folk duo the Holy Modal Rounders, released in 1967 through ESP-Disk.

Side one deals with psychedelic guitar and fiddle jams to radically altered interpretations of traditional folk songs. Side two is less experimental, as it focuses on retaining the freak-out style of their past albums. Michael Hurley contributes songs for the album and would later be an official member of the band.