Martin John Bryant (born 7 May 1967) is a convicted Australian mass shooter who murdered 35 people and injured 23 others in the Port Arthur massacre, one of the world's deadliest shooting sprees, in Port Arthur, Tasmania, between 28 and 29 April 1996. He is concurrently serving 35 life sentences, plus 1,652 years, all without the possibility of parole, at Risdon Prison in Hobart.