Dean Stanley Geyer is a South African Australian singer-songwriter, actor and martial artist who finished third in the 2006 season of the talent show television series Australian Idol, and has had a notable role in the Australian soap opera Neighbours as Ty Harper. He joined the cast of the US show Glee in the 4th season as NYADA Junior Brody Weston and appeared in Terra Nova as Mark Reynolds.

Australian Idol is an Australian singing competition, which began its first season in July 2003 and ended its initial run in November 2009. As part of the Idol franchise, Australian Idol originated from the reality program Pop Idol, which was created by British entertainment executive Simon Fuller. Australian Idol was televised on Network Ten for its first seven series and was broadcast on the Southern Cross Austereo Radio Network between 2005 and 2007. The series returned in 2023 after Seven Network announced they would be picking up the show.