"Upside Down" is a hit song by Diana Ross released on the Motown label. It was the first single taken from her 1980 album diana and hit number one on the Billboard Hot 100 on September 6, 1980. It also hit number one on the Billboard Disco/Dance and R&B charts. The single was released a full 4 weeks after the album was released. In its third week on the Billboard Hot 100, it made a dramatic leap into the Top 10 (*49-*10). It held down the #1 title for 4 weeks.
The single was also a big hit internationally, topping the singles charts in Sweden, Italy, Norway and Switzerland, while reaching #5 in Canada. It also rose to #2 on the UK Singles Chart, marking the highest peak performance from Ross as a solo artist since "I'm Still Waiting" in 1971.
The song listed at #62 on Billboard's "Greatest Songs of All Time".