Delta Lea Goodrem AM (born 9 November 1984) 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.

Goodrem's second studio album, Mistaken Identity (2004), was recorded while she was undergoing treatment for cancer. It became her second number-one album. In 2007, Goodrem released Delta, her third number-one album, which saw another number-one single, "In This Life". Her fourth studio album, Child of the Universe (2012), produced the single "Sitting on Top of the World". In 2016, her fifth studio album, Wings of the Wild, became her fourth number-one album on the ARIA Albums Chart, while giving her another number-one single, "Wings". Goodrem's most recent and fifth number-one studio album, Bridge over Troubled Dreams was released May 2021.

Goodrem has a total of nine number-one singles and 17 top-ten hits on the ARIA Singles Chart. She has sold over eight million albums globally and overall has won three World Music Awards, 12 ARIA Music Awards, an MTV Video Music Award and several other awards. She served as a coach on The Voice Australia from 2012 to 2013 and again from 2015 to 2020. During her one-season hiatus in 2014, she served as a coach on The Voice Kids, and coached eventual winner Alexa Curtis. She coached eventual winners of the show in season five in 2016 and again in season six in 2017, She became The Voice's senior coach in 2017 after Joel Madden's departure, serving until 2020. With the release of her Christmas studio album Only Santa Knows in 2020, since then, she hosts and performs a Christmas concert every year on the Nine Network.