The 2011 World Junior Ice Hockey Championships, Division I was hosted in two groups of six teams each between December 12 and 19, 2010. Group A was played in Babruysk, Belarus between December 13 and December 19, 2010. Group B was played in Bled, Slovenia between December 12 and December 18, 2010. In addition to the usual promotion and relegation, the format (following this year) changed from two parallel tournaments, to two tiered tournaments. This means that the teams who finished 2nd and 3rd will be grouped together with the two relegated teams from the top division, and the teams who finished 4th and 5th will be grouped with the two promoted teams from Division II.