"Titanium" is a song by French DJ and record producer David Guetta, featuring vocals by Australian singer and songwriter Sia.

"Titanium" attained top 10 positions in several major music markets, including Australia, Austria, Canada, Denmark, Finland, France, Germany, Hungary, Ireland, Italy, The Netherlands, New Zealand, Norway, Spain, Sweden, Switzerland and the United States.

The song's accompanying music video premiered on 20 December 2011 but does not feature appearances by Guetta or Sia, instead it focuses on a young boy with supernatural powers, played by actor Ryan Lee.

[6] American pop singer Katy Perry was the first person to be offered the track but turned it down because she felt its message was too similar to that of her song "Firework".

[9] Guetta considered approaching other female singers to record on the song, however Perry advised him to keep Sia on the track.

[15] Cameron Adams of Herald Sun called them "square-peg",[16] while Melinda Newman of HitFix compared her vocals to those by Fergie.

Club wrote that on the song, Sia "manage[s] to keep [her] head above the waves of synths ... by amping up [her] vocals to match the outsized beats.

[19] David Byrne and Tony Peregrin of Windy City Times described "Titanium" as "epic" and "energizing", writing, "it is Sia who steals the show" on Nothing but the Beat.

"[22] Rich Lopez of Dallas Voice wrote that the "collaborative lyrics elevate this song to a higher level than any previous track" from the album, and called it "clever writing" from Sia.

[23] David Griffiths off 4Music called it "The most intriguing hook-up" on the album, writing that "'Titanium' sees Guetta giving the Australian songstress some long overdue commercial appeal, while Sia's vocals bring a quirky twist.

"[13] Kerri Mason of Billboard magazine described the song as "Guetta's quirkiest and most epic track to date (in itself an unusual combination).

[25] Joe Copplestone of PopMatters noted that songs on the album such as "Titanium" and "Night of Your Life", "recall the power" of Guetta's previous collaborations with Kelly Rowland on "When Love Takes Over" (2009) and "Commander" (2010).

[28] After the Sandy Hook Elementary School shooting in December 2012, "Titanium" was pulled from radio stations in the United States due to the use of gun-related lyrics in the song.

"Titanium" is part of a group of songs that were taken off the air, including Kesha's "Die Young", and "Pumped Up Kicks" by Foster the People.

[30] After weeks of ascending and descending the chart, the song peaked at number three on 7 January 2012, giving Guetta his thirteenth top 10 hit in France.

[31] It was certified five times platinum by the Australian Recording Industry Association (ARIA), denoting sales of 350,000 copies.

[31][32] "Titanium" became Sia's second highest-charting single as a solo artist in the country as well as Guetta's ninth top 10 hit there.

[37] The song was certified platinum by the International Federation of the Phonographic Industry (IFPI), denoting sales of 30,000 copies.

[38] "Titanium" also reached the top 10 in the charts of Belgium, Canada, Denmark, Finland, Germany, Ireland, Italy, The Netherlands, Norway, Spain, Sweden and Switzerland.

[51] After it was released to US radio in April 2012, "Titanium" reached a new peak of number seven on the issue dated 21 July 2012, and became Guetta's fourth top-ten single on the Hot 100.

[59] The preview showed a young boy (played by actor Ryan Lee) in the smoky woods running away from a SWAT team of men.

[61] Jason Lipshutz of Billboard magazine noted that "the supernatural scene and suburban setting" in the video recall the science fiction film Super 8 (2011), in which Lee stars.

[65] Scottish recording artist Emeli Sandé performed "Titanium" with Guetta at the NRJ Music Awards, held in France on 29 January 2012.

[66] On 21 April 2012, Sia made a surprise appearance during Guetta's set for the second weekend of Coachella in Indio, California, where they performed "Titanium".

[176][177] British pop and soul singer Jahméne Douglas released a cover version of "Titanium" on 22 July 2013 as the lead single from his debut studio album, Love Never Fails (2013).