Dean Stanley Geyer (born 20 March 1986) is a South African Australian singer-songwriter and actor 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.
Geyer was born in Johannesburg, South Africa, as the oldest of three children. He has two younger sisters, Jess Geyer (now Jess Burns) and Tatum Geyer (now Tatum Prins), who share his interest in martial arts. Geyer's interest in music started early in his childhood. He learned to play the guitar, and wrote his first song entitled "Change" which was based on his move from South Africa to Australia. During his schooling life in Melbourne, Australia, he attended Melbourne High School - a selective-entry, all boys' school in South Yarra, Victoria. At his Australian Idol audition, he played a self-composed song called "Nice to Meet You".