Courtney Melba Barnett (born 3 November 1987) is an Australian singer, songwriter, and musician. Known for her deadpan singing style and witty, rambling lyrics, she attracted attention with the release of her debut EP I've Got a Friend Called Emily Ferris in 2012. International interest came with the release of her EP The Double EP: A Sea of Split Peas in 2013.

Barnett's debut album—Sometimes I Sit and Think, and Sometimes I Just Sit—was released in 2015 to widespread acclaim. At the 2015 ARIA Music Awards, she won four awards from eight nominations. She was nominated for Best New Artist at the 58th Annual Grammy Awards and International Female Solo Artist at the 2016 Brit Awards. She released Lotta Sea Lice, a collaborative album with Kurt Vile, in 2017. She released her second album, Tell Me How You Really Feel, to further acclaim in 2018. Barnett's third studio album—Things Take Time, Take Time—was released in November 2021.