John Carlton Young is a British-born Australian accountant and businessman, who established the Great Southern Group, an agribusiness managed investment scheme (MIS) group of companies. Great Southern Group was listed on the Australian Stock Exchange in 1999, and went into administration in 2009. In 2006, Young was listed in the Business Review Weekly (BRW) 'Rich List' with an estimated worth of A$184 million; however much of that fortune was in shares in his company, which by 2009 were almost valueless.