Tripper is the fifth full-length studio album by math rock band Hella. It was their first release through Sargent House. The album is an instrumental record. It was released on August 30, 2011 and marks the band's reduction back to core members Zach Hill and Spencer Seim, after having expanded to a five-piece for their 2007 release There's No 666 in Outer Space. It charted at No 41 on the Billboard Heatseekers Albums for 17 September 2011.