The Tangled Up Tour was the fourth concert tour by English-Irish girl group Girls Aloud. It supported their fourth studio album Tangled Up. Tour dates were announced in November 2007. Girls Aloud performed twenty-four shows at arenas across the United Kingdom and Ireland, making this tour their third to reach arenas. The tour commenced in Belfast on 3 May 2008 and concluded in Birmingham on 4 June. Girls Aloud also performed eleven open-air concerts over the summer.

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".