The 2010 NAB AFL Under 18 Championships was the 15th 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. The competition was played over five rounds, in seven states and territories, across two divisions. In rounds two and four of the competition, the second-division teams crossed over and played the division one sides, while the other three rounds of matches were played between the teams in each the division. Vic Country and Tasmania were the Division 1 and Division 2 champions, respectively. The Larke Medal (for the best player in Division 1) was awarded to Western Australia's Harley Bennell, and the Hunter Harrison Medal (for the best player in Division 2) was won by Tasmania's Sam Darley.