T.Rex (originally known as Tyrannosaurus Rex, also occasionally spelt T Rex or T-Rex), were an English rock band fronted by Marc Bolan. The band founded in 1960s London and found success as a 1970s glam rock group.

T. Rex (A Celebration of Marc and Mickey) is a T. Rex tribute band formed in 1997 by former T. Rex member Mickey Finn. The band was originally known as Mickey Finn's T. Rex but changed their name in 2003 after the death of founding member Mickey Finn.

Initially a British folk-rock combo called Tyrannosaurus Rex, T.Rex was a primary force in glam rock , thanks to the creative direction of guitarist/vocalist Marc Bolan (born Mark Feld). Bolan created a deliberately trashy form of rock and roll that was proud of its own disposability. T.Rex’s music borrowed the underlying sexuality of early rock & roll, adding dirty, simple grooves and fat distorted guitars, as well as an overarching folky/hippie spirituality that always came through the clear