Amanda Leigh Moore (born April 10, 1984) is an American singer, songwriter, and actress. She rose to fame with her debut single, "Candy", which peaked at number 41 on the Billboard Hot 100. Her debut studio album, So Real (1999), received a platinum certification from the RIAA. The title single from her reissue of So Real, "I Wanna Be With You" (2000), became Moore's first top 40 song in the US, peaking at number 24 on the Hot 100. Moore subsequently released the studio albums Mandy Moore (2001), Coverage (2003), Wild Hope (2007), Amanda Leigh (2009), Silver Landings (2020), and In Real Life (2022). As of 2009, Moore has sold over 2.7 million albums in the US according to Billboard.

Moore made her feature film debut in 2001, with a minor voice role in Dr. Dolittle 2, before playing a supporting role in the comedy The Princess Diaries. She received recognition for her starring role in the romantic drama A Walk to Remember (2002). Her subsequent film credits include Chasing Liberty (2004), Saved! (2004), Racing Stripes (2005), Because I Said So (2007), License to Wed (2007), Love, Wedding, Marriage (2011), 47 Meters Down (2017), The Darkest Minds (2018), and Midway (2019). Moore also voiced Princess Rapunzel in the Disney animated fantasy musical film Tangled (2010).

From 2016 to 2022, Moore starred as Rebecca Pearson in the NBC family drama series This Is Us, receiving nominations for a Golden Globe Award and a Primetime Emmy Award. In 2019, Moore was awarded a star on the Hollywood Walk of Fame.