Roar

Roar may refer to :
Roar (utterance), a sound produced by certain animals such as lions, tigers and mammoths.
  Roar, the King's College London student newspaper
Brisbane Roar FC, an Australian football club (formerly Queensland Roar FC)
Roar (movie)  a movie set in Africa and produced by Tippi Hedren
Roar (TV series), a short-lived television drama set in 4th century Ireland 
Roar (UK TV series), a CBBC television series about the animals in a zoo
Rrröööaaarrr, second album of Canadian progressive metal band Voivod
The Roar, a 2008 novel by Emma Clayton
Roar (roller coaster), the name of two wooden roller coasters located at Six Flags America and Six Flags Discovery Kingdom
ROAR Registry of Open Access Repositories indexes open access institutional repositories. 

Names
"Roar", a Norwegian form of the name Roger
Roar (dubious Danish king), a dubious legendary king of Denmark
Roar Ljøkelsøy, a Norwegian ski jumper