"Tonight" is a song by Irish boy bandWestlife. It was first released as a single in Sweden on 21 March 2003. In the United Kingdom, "Tonight" was issued as a double A-side single with "Miss You Nights" three days later. It served the second and final single from their first compilation album, Unbreakable – The Greatest Hits Volume 1 (2002). The double A-side peaked at No. 1 in Ireland, becoming Westlife's 10th number-one single in their home country. In the UK, the single reached No. 3 on the UK Singles Chart.
^Tonight / Miss You Nights (UK CD2 liner notes). Westlife. RCA Records, S Records, BMG. 2003. 74321 986802.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)
^Tonight (European CD single liner notes). Westlife. RCA Records, S Records, BMG. 2003. 74321 980622.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)
^Tonight (European maxi-CD single liner notes). Westlife. RCA Records, S Records, BMG. 2003. 74321 980612.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)
^Tonight (Australian CD single liner notes). Westlife. RCA Records, S Records, BMG. 2003. 82876517412.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)