"Believe Again" is a New Age and electronica-influenced pop song written by Delta Goodrem, Brian McFadden, Stuart Crichton and Tommy Lee James produced by Stuart Crichton and Marius de Vries for Goodrem's third studio album Delta (2007). The single, released in Australia on 8 December 2007, features exclusive remixes and the unreleased B-side track, "Fortune and Love". The single was released to radio on 12 November 2007, although it had its premiere on commercial radio in late-October 2007.

Delta Lea Goodrem AM is an Australian singer, songwriter, television personality and actress. Goodrem signed a recording contract with Sony Music at the age of 15. Her debut studio album, Innocent Eyes (2003), topped the ARIA Albums Chart for 29 non-consecutive weeks. It is one of the highest-selling Australian albums and is the second-best-selling Australian album of all time with over four million copies sold.