Brian Ross Martin AO KC (born 2 September 1947) is an Australian jurist. He was a judge of the Supreme Court of South Australia before being appointed Chief Justice of the Supreme Court of the Northern Territory in 2004. He served in the Northern Territory between 2004 and 2010. He served as an acting Judge of the Supreme Court of Western Australia in 2012. In legal texts, he is referred to as "Martin (BR) CJ" to avoid confusion with his predecessor.