Bulgaria participated in the Eurovision Song Contest 2007 with the song "Water" written and performed by Elitsa Todorova and Stoyan Yankoulov. The Bulgarian broadcaster Bulgarian National Television (BNT) organised the national final Bŭlgarskata pesen v „Evroviziya 2007” in order to select the Bulgarian entry for the 2007 contest in Helsinki, Finland. A total of 21 entries were selected to participate in the national final which consisted of two shows: a semi-final and a final, held on 3 February 2007 and 24 February 2007, respectively. Eighteen entries competed in the semi-final and the top nine songs as determined by a twelve-member jury panel qualified to the final alongside three pre-qualified songs. In the final, public televoting exclusively selected "Voda" performed by Elitsa Todorova and Stoyan Yankoulov as the winning entry with 31,376 votes. The song was later retitled for the Eurovision Song Contest as "Water".

The Eurovision Song Contest 2007 was the 52nd edition of the Eurovision Song Contest. It took place in Helsinki, Finland, following the country's victory at the 2006 contest with the song "Hard Rock Hallelujah" by Lordi. Organised by the European Broadcasting Union (EBU) and host broadcaster Yleisradio (YLE), the contest was held at the Hartwall Areena, and consisted of a semi-final on 10 May, and a final on 12 May 2007. The two live shows were presented by Finnish television presenter Jaana Pelkonen and musician and TV-host Mikko Leppilampi. In addition, Krisse Salminen acted as guest host in the green room, and reported from the crowds at the Senate Square.