The Eurovision Song Contest 2007 was the 52nd edition of the annual Eurovision Song Contest. It took place in Helsinki, Finland, following Lordi's win at the 2006 contest in Athens, Greece with the song "Hard Rock Hallelujah". The contest was held at the Hartwall Areena in Helsinki, Finland from 10 May to 12 May, and staged by host broadcaster Yle.
A budget of €13 million was presented for arranging the contest. Other bids to host the contest came from Espoo, Turku and Tampere. The hosts were Finnish television personality Jaana Pelkonen and Finnish musician, stage performer and actor Mikko Leppilampi. Krisse Salminen acted as guest host in the green room, and reported from the crowds at the Senate Square.
A record number of 42 countries participated. The European Broadcasting Union (EBU) put aside its limit of 40 countries, which would have meant excluding some countries using a ranking order scheme.
The winner was Serbia, appearing as an independent country for the first time. After Lordi scored the first ever Eurovision victory with a hard rock song, several countries sent rock songs to the Contest rather than the soft pop and schlager styles more closely associated with Eurovision. This trend continued at the 2008 and 2009 Contests.
Cyprus and Latvia entered songs in languages other than their own or English. Although this happened with the Belgium 2003 entry, this was the first time the contest featured countries doing this with actual languages as opposed to an imaginary one.