The 2012 UEFA European Football Championship, commonly referred to as Euro 2012, will be the 14th European Championship for national football teams organised by UEFA. The final tournament will be hosted by Poland and Ukraine between 8 June and 1 July 2012. It is the first time that either nation has hosted the tournament. This bid was chosen by UEFA's Executive Committee in 2007.

The final tournament features 16 nations, the last European Championship to do so (from Euro 2016 onward, there will be 24 finalists). Qualification was contested by 51 nations between August 2010 and November 2011 to join the two host nations in the tournament. The winner of the tournament gains automatic entry to the 2013 FIFA Confederations Cup hosted by Brazil.

The joint Poland–Ukraine bid was chosen by a vote of the UEFA Executive Committee at a meeting in Cardiff on 18 April 2007, defeating both Italy and a Croatia–Hungary bid. Poland–Ukraine became the third successful joint bid for the European Championship, after those of Belgium–Netherlands (2000) and Austria–Switzerland (2008). Italy had been considered favourites to win the hosting but incidents of fan violence and a match fixing scandal were widely cited as factors behind their failure.