The Completion Backward Principle is the fifth studio album by the American rock group the Tubes. It is the group's first for Capitol Records. It was accompanied by a long form music video release of the same name, although it did not contain all of the songs from the album. It is a concept album presented as a motivational business document. The album contains two hit singles, "Don't Want to Wait Anymore" and "Talk to Ya Later."

The Tubes are a San Francisco-based rock band. Their self-titled 1975 debut album included the single "White Punks on Dope", while their 1983 single "She's a Beauty" was a top-10 U.S. hit and its music video was frequently played in the early days of MTV. The band also performed in the 1980 film Xanadu, singing the rock portion of the cross-genre song "Dancin'" opposite a big band.