Amanda Leigh "Mandy" Moore (born April 10, 1984) is an American singer-songwriter and actress. Moore first came to prominence with her 1999 debut single, "Candy", which peaked at number 41 on the Billboard Hot 100. After singing with Epic Records, she released her first album, So Real, in 1999. It went on to receive a Platinum certification from the RIAA. Her 2000 single, "I Wanna Be with You", became her first Top 30 song in the US, peaking at number 24 on the Hot 100 chart. The parent album of the same name was released that same year to generally mixed reviews. The album went on to achieve Gold certification. After revealing her displeasure with her early works, Moore's self-titled third album, Mandy Moore (2001), featured a change of sound that drifted away from her "bubblegum pop" roots. The album spawned the single "In My Pocket", which became her third Top 20 song in Australia. The album itself was her final album to be certified by the RIAA, receiving a Gold certification.

In 2003, Moore released her fourth studio album, Coverage, featuring covers of classic 1970s songs. Following the album's release, Moore parted ways with Epic due to creative differences. The split prompted the label to release the compilation albums The Best of Mandy Moore (2004) and Candy (2005), both of which have sold an estimated 100,000 copies to date. Moore did not return to music until the release of her 2007 album Wild Hope, which failed to have much success. To date, the album has sold an estimated 200,000 copies, and failed to receive an RIAA certification. Similarly, both of the album's singles failed to chart worldwide. In 2009, Moore released her sixth studio album, Amanda Leigh, which peaked at number 25 on the Billboard 200 and sold an estimated 100,000 copies. In 2012, Moore confirmed that she was working on her seventh studio album. As of 2009, Moore has sold more than 15 million albums worldwide, according to Billboard. In 2012, Moore was ranked #96 on VH1's list of "100 Greatest Women in Music", as well as #63 on their Sexiest Artists of All Time List.

Outside of her musical career, Moore has also branched out into acting. She made her film debut in the 2001 film Dr. Dolittle 2, though it was only a minor voice role. Later that year, she appeared as Lana Thomas in the comedy film The Princess Diaries, alongside Anne Hathaway. She had her first starring role as Jamie Sullivan in the 2002 romantic drama film A Walk to Remember, which was based on the novel by Nicholas Sparks. Between 2003 and 2006, Moore starred in various films, including How to Deal (2003), Chasing Liberty (2004) and Saved! (2004). She later co-starred in the 2006 satirical comedy American Dreamz, which was both a critical and financial failure. The film failed to make back its $17 million budget, and debuted at number 9 at the box office. The following year, Moore co-starred in the romantic comedies Because I Said So and License to Wed. In 2010, Moore voiced Rapunzel in the animated film Tangled, in which she performed the duet "I See the Light" with Zachary Levi; the song won a Grammy for Best Song Written for Visual Media. She later reprised the role in the short film Tangled Ever After, and will do so again in a Disney Channel television series based on the film in 2017. She has also voiced the role in several video games.