The 2011 NAB AFL Under 18 Championships were the 16th edition of the AFL Under 18 Championships. Eight teams competed in the championships: Vic Metro, Vic Country, South Australia and Western Australia in Division 1, and New South Wales/Australian Capital Territory (NSW/ACT), Northern Territory, Queensland and Tasmania in Division 2. Vic Metro were the Division One champions and Tasmania were the Division Two champions. The Larke Medal was awarded to Western Australia's Stephen Coniglio, and the Hunter Harrison Medal was won by Tasmania's John McKenzie.