Iceland competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. The nation celebrated its centennial anniversary in the Olympics, having participated at every games since 1912, except for four occasions.

At the 2012 Summer Olympics Parade of Nations of the 2012 London Olympics, athletes and officials from each participating country paraded into the Olympic Stadium preceded by their national flag to the sound of iconic British modern music. Each flag bearer was chosen by each nation's National Olympic Committee or by the delegation of athletes.