{{Infobox single
| Name = Us Against the World
| Cover = UsAgainstTheWorldCD1.jpg
| Artist = [[Westlife]]
| Album = [[Back Home (Westlife album)|]]
| Released = March 3, 2008
| Format = CD single, digital download
| Recorded = 2007<br/>[[Maratone Studio]]s<br/>([[Stockholm]], [[Sweden]])
| Genre = [[Pop music|Pop]]
| Length = 4:01
| Label = [[Sony BMG]]
| Writer = [[Arnthor Birgisson]], [[Rami Yacoub]], [[Savan Kotecha]]
| Producer = [[Arnthor Birgisson]], | Reviews = *[[Digital Spy]] {{rating-5|2}} [http://www.digitalspy.co.uk/music/a88773/westlife-us-against-the-world.html]
| Last single = "[[...|Home]]"<br />(2007)
| This single = "Us Against the World"<br />(2008)
| Next single = "[[Something Right]]"<br />(2008)
| Misc = {{Extra track listing
| Album = [[Back Home (Westlife album)|]]
| Type = studio
| prev_track = "[[...|Home]]"
| prev_no = 1
| this_track = "Us Against the World"
| track_no = 2
| next_track = "[[Something Right]]"
| next_no = 3
}} {{Extra album cover
| Upper caption = "Us Against The World CD2"
| Type = single
| Cover = UsAgainstTheWorldCD2.jpg
| Lower caption = The cover resembles [[The Sun (newspaper)|]] and [[Daily Mirror]]
}}
}}
"Us Against The World" is a song by [[Ireland|Irish]] [[boyband]] [[Westlife]] from their ninth studio album, [[Back Home (Westlife album)|]]. The song was released as the album's second single in both [[Ireland]] and the [[United Kingdom]], in March 3, 2008. The song was composed by Arnthor Birgisson, [[Rami Yacoub]] and [[Savan Kotecha]]. A [[music video]] for the song was filmed in December 2007 and premiered in February 14, 2008.