Martin John Bryant (born 7 May 1967) is an Australian man who is known for murdering 35 people and injuring 23 others in the Port Arthur massacre, one of the world's deadliest shooting sprees, in Port Arthur, Tasmania, Australia, between 28–29 April 1996.
He is concurrently serving 35 life sentences, plus 1,035 years, all without the possibility of parole (thus meaning that the life sentence imposed is for the term of his natural life) in Hobart's Risdon Prison.