Colbie Marie Caillat ( KOHL-bee kə-LAY; born May 28, 1985) is an American singer-songwriter. She rose to fame through social networking website Myspace. At that time, she was the number one unsigned artist of her genre.

After signing with Universal Republic Records, she released her debut album, Coco, in July 2007. The album included the hit singles "Bubbly" and "Realize", and is certified 2× Platinum. In 2008, she recorded a duet with Jason Mraz, "Lucky", which won a Grammy Award. In August 2009 she released Breakthrough, her second album, which became her first album to debut at number one on the Billboard 200. It has been certified Platinum by the RIAA. Breakthrough was nominated for Best Pop Vocal Album at the 2010 Grammy Awards. She was also part of the group that won Album of the Year at the 2010 Grammy Awards for her featured vocals and writing on Taylor Swift's Fearless album. In July 2011, she released her third studio album, All of You. In October 2012 she released her first Christmas album, Christmas in the Sand. From 2018 to 2020, she was a member of the country music group Gone West.

Caillat has sold over six million albums worldwide and over 10 million singles. In 2009, she was named Billboard magazine's 94th-best-selling music artist of the 2000s.