The 2011 IIHF World Championship was the 75th IIHF World Championship, an annual international men's ice hockey tournament. It took place between 29 April and 15 May 2011 in Slovakia. The games were played in the Orange Arena in Bratislava, and the Steel Aréna in Košice. The Czech team was the defending champion.

The Ice Hockey World Championships are an annual international men's ice hockey tournament organized by the International Ice Hockey Federation (IIHF). First officially held at the 1920 Summer Olympics. The IIHF was created in 1908 while the European Championships, the precursor to the World Championships, were first held in 1910. The tournament held at the 1920 Summer Olympics is recognized as the first Ice Hockey World Championship. From 1920 to 1968, the Olympic hockey tournament was also considered the World Championship for that year.