"Opportunity Nox" is a song by Swedish pop music duo Roxette, released on 25 February 2003 as the lead single from the duo's third greatest hits compilation album, The Pop Hits (2003).

The song was originally recorded at Per Gessle's Tits & Ass Studios in Halmstad on 4 March 2002.

[1] Further recording took place later in October at EMI Studios in Stockholm, a month after vocalist Marie Fredriksson was diagnosed with a brain tumour.

[2] Following Fredriksson's diagnosis, neither Roxette or Gessle himself publicly promoted the track,[2] although an animated music video was directed by the duo's longtime collaborator Jonas Åkerlund, as well as Kristoffer Diös.

[4] Despite the lack of promotion, the song became a substantial hit in the duo's native Sweden.