Adios is the eleventh studio album released by German industrial band KMFDM. The album was originally conceived as the group's parting shot to its longtime record label, Wax Trax! Records, but it ended up also signaling the break-up of KMFDM itself until the band reformed in 2002. Recorded in Seattle, Washington, this was the last album to feature En Esch and Günter Schulz, who both went on to form Slick Idiot. Following the break-up, founding member Sascha Konietzko created the band MDFMK, before reforming KMFDM in 2002 without Esch or Schulz.
The album was released on April 20, 1999, on the same date the Columbine High School massacre took place. Eric Harris and Dylan Klebold, the two perpetrators of the massacre, were both avid KMFDM fans. Eric Harris noted the coincidence of the album's title and release date in his journal.