Christopher Michael "CT" Tamburello (born July 16, 1980) is a television personality and actor, best known as a competitor on the MTV reality competition show The Challenge. His first television appearance was on the of The Real World in 2003. In 2023, he competed on the second season of The Traitors.
In 2003, Tamburello was offered the choice to appear on ' or Road Rules, opting to chose the former.
Tamburello made his Challenge debut on its . He would win his first season in 2013, where he was partnered with rival Wes Bergmann on '. As of 2024, Tamburello has won five seasons of The Challenge and two spin-off seasons.
Tamburello competed on the second season of The Traitors alongside fellow The Challenge alumni Trishelle Cannatella and Johnny Bananas. Tamburello competed the whole season as a "faithful" and was able to help banish the four traitors of the season (Dan Gheesling, Parvati Shallow, Phaedra Parks and Kate Chastain). In the end, he and Cannatella were the last two standing and were the winners of the season.
Tamburello was in an on-again, off-again relationship with fellow The Challenge competitor Diem Brown from 2006 until her death in 2014. Tamburello then started a relationship with Lilianet Solares, in which they had a child born in 2016; the pair were married in 2018. They divorced in 2023. He was in a relationship with Catalina Hager, an ex-wife of professional wrestler Jake Hager.