The 2009 IIHF World Championship Division I was two ice hockey tournaments under the authority of the International Ice Hockey Federation.

The Group A tournament was held in Vilnius, Lithuania and the Group B tournament was hosted by Toruń, Poland.

Division I represents the second level of the Ice Hockey World Championships.

The Group A tournament was played in Vilnius, Lithuania, from 11 to 17 April 2009.

The Group B tournament was played in Toruń, Poland, from 11 to 17 April 2009.