The 2012 UEFA European Football Championship, or Euro 2012, will be the 14th Championship for national football teams sanctioned by UEFA. The final tournament will be hosted by Poland and Ukraine between 8 June and 1 July 2012.

Participating teams:
The finals will feature sixteen national teams, as has been the format since 1996. Some European football associations were in favour of expanding the tournament to 24 teams, although the number of UEFA members had hardly increased since the last tournament extension in 1996 (53 in April 2006 compared to 48 for Euro 1996).[33] In April 2007, UEFA's Executive Committee formally decided against an expansion for 2012. Country has qualified Country has failed to qualify Country is not a UEFA member Twelve of the sixteen finalists participated at the previous tournament in 2008, with England and Denmark, who participated in 2004, returning after missing the 2008 edition. The Republic of Ireland return after an absence of 24 years, making only their second appearance at a European finals. Hosts Ukraine, make their debut as an independent nation, having previously participated as part of the Soviet Union.

In January 2008, UEFA president Michel Platini went on the record to warn the organisers of the need to avoid "critical slippages" in their preparations,[3] prompting Scotland to reportedly inform UEFA that they would be willing to step in as hosts,[4] which they reiterated again later in the year.[5] However, by June 2008, UEFA stated they were "not discussing any plan B in terms of new countries" hosting. Ukraine reported several problems which threatened their ability to co-host: delays in the renovation of Kiev’s Olympic Stadium, and difficulties funding infrastructure work after the economic crisis struck.After an inspection in April 2009, Platini re-affirmed that Ukraine would remain co-host but hinted that most matches could go to Poland.[9] The Polish Prime Minister Donald Tusk stated his country would be capable of this task, but was committed to the original 4 + 4 host city plan, as was the Polish FA. Poland's one major incident occurred in late September 2008, when its government suspended the Polish Football Association (PZPN) over corruption issues and assigned an administrator. UEFA swiftly issued a letter warning that it risked losing the right to co-host, which resulted in the government yielding.[13] Preparation work proceeded more speedily than in Ukraine and, following a visit in April 2009, Platini announced that all was on track and he saw no major problems. The following month, UEFA confirmed the appointment of the Polish cities of Warsaw, .At the same meeting, an appeal for delayed decision on the Ukrainian venues was granted to Lviv, Donetsk and Kharkiv in order to meet specific conditions regarding infrastructure, with a warning that only Kiev and the best prepared city of the other candidates would otherwise be used if issues were not resolved by the end of November. In September 2009 Platini announced that "Ukraine has made sudden progress in their efforts to stage the tournament",and it was soon confirmed that their four cities (Donetsk, Kharkiv, Kiev and Lviv) would host matches. Kiev was also confirmed to host the Final.