Casisdead (stylised as CASISDEAD), also known as Cas and formerly Castro Saint, is a UK rap and grime MC, record producer and music video director from the United Kingdom. Casisdead began rapping in 2005 under the name Castro Saint, but retired the moniker in 2007 when he took a five-year hiatus from the music business. When he returned in 2012, he adopted the name Casisdead. Casisdead's debut album, Famous Last Words, was released on 27 October 2023 via XL Recordings. The album spent one week at number 7 on the official UK Albums Chart along with placing number 1 on the official UK Hip Hop & R&B Albums Chart. In 2024 Casisdead won the Brit for the best Hip Hop/Rap/Grime Act at The Brit Awards.