The 2009 IIHF World U18 Championship Division III was an international under-18 ice hockey competition organised by the International Ice Hockey Federation. Both Division III tournaments made up the fourth level of competition of the 2009 IIHF World U18 Championships. The Group A tournament took place between 27 February and 5 March 2009 in Taipei, Chinese Taipei and the Group B tournament took place between 9 and 15 March 2009 in Erzurum, Turkey. Australia and Iceland won the Group A and B tournaments respectively and gained promotion to Division II of the 2010 IIHF World U18 Championships.