Out of Control is the fifth and final studio album by English-Irish girl group Girls Aloud, released on 31 October 2008 in Ireland and on 3 November 2008 in the UK by Fascination Records. Like their previous albums, it was crafted by the production team of Brian Higgins and Xenomania. Out of Control builds on the sound of Girls Aloud's previous albums and represents a move into the mainstream for the group.

Girls Aloud are a British pop girl group that was created through the ITV talent show Popstars: The Rivals in 2002. The line up consisted of members Cheryl Tweedy, Nadine Coyle, Sarah Harding, Nicola Roberts and Kimberley Walsh. In 2012, the group was named as the United Kingdom's biggest selling girl group of the 21st century so far, with over 4.3 million singles sales and 4 million albums sold in the UK alone. During their two decades together, the group achieved a string of twenty top ten singles on the UK Singles Chart, including four number ones. They also achieved seven certified albums, two of which debut at number one. They have been nominated for five Brit Awards, winning the 2009 Best Single for "The Promise".