The 2010 IIHF World U18 Championship Division II was an international under-18 ice hockey competition organised by the International Ice Hockey Federation. Both Division II tournaments made up the third level of the IIHF World U18 Championships. The Group A tournament was played in Narva, Estonia, and the Group B tournament was played in Kiev, Ukraine. Italy and Slovenia won the Group A and B tournaments respectively and gained promotion to the Division I of the 2011 IIHF World U18 Championships.