Kesha Rose Sebert (born March 1, 1987), formerly stylized as Ke$ha, is an American singer, rapper, and songwriter. She has earned two number-one albums on the US Billboard 200 with Animal (2010) and Rainbow (2017), and the top-ten records Warrior (2012) and High Road (2020). She attained ten top-ten singles on the US Billboard Hot 100, including "Tik Tok", "Right Round" with Flo Rida, "My First Kiss" with 3OH!3, "Blah Blah Blah", "Your Love Is My Drug", "Take It Off", "We R Who We R", "Blow", "Die Young", and "Timber" with Pitbull. Her 2009 single "Tik Tok" was the best-selling digital single in history, selling over 14 million units internationally, until surpassed in 2011. She fulfilled her five-album contract with Kemosabe Records by releasing the album Gag Order (2023), and released her first independent album, Period (2025), under her own label, Kesha Records.

Kesha's career was halted between Warrior and Rainbow due to a legal dispute with her former producer, Dr. Luke, which began in 2014. A series of lawsuits, known collectively as Kesha v. Dr. Luke, were exchanged between the two parties in which Kesha accused him of physical, sexual, and emotional abuse and employment discrimination against her, while Dr. Luke claimed breach of contract and defamation. The case was settled out of court in June 2023.

Kesha is listed as the 26th top artist on Billboard's 2010s decade-end charts. She has received various awards and nominations, including the MTV Europe Music Award for Best New Act in 2010. Kesha has also co-written songs for other artists, including "Till the World Ends" (2011) for Britney Spears and songs for Ariana Grande, Miley Cyrus, Miranda Cosgrove, and Girls' Generation.