The 2013 IIHF U18 World Championship Division I was two international under-18 ice hockey tournaments organised by the International Ice Hockey Federation. The Division I A and Division I B tournaments represent the second and the third tier of the IIHF World U18 Championships.
The Division I A tournament was played in Asiago, Italy, from 7 to 13 April 2013. Danish goalie George Sørensen scored a goal against France, joining Anton Khudobin as the only goaltenders ever to accomplish this feat in an IIHF event.
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<small>All times are local. (Central European Summer Time â UTC+2)</small>
The Division I B tournament was played in Tychy, Poland, from 14 to 20 April 2013.
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<small>All times are local. (Central European Summer Time â UTC+2)</small>