Federal elections were held in Belgium on 13 June 2010, during the midst of the 2007-11 Belgian political crisis. After the fall of the previous Leterme II Government over the withdrawal of Open Flemish Liberals and Democrats (Open VLD) from the government the King dissolved the legislature and called new elections. The New Flemish Alliance, led by Bart De Wever, emerged as the plurality party with 27 seats, just one more than the francophone Socialist Party, led by Elio Di Rupo, which was the largest party in the Wallonia region and Brussels. It took a world record 541 days until a government was formed, resulting in a government led by Di Rupo.

Yves Leterme served as the caretaker prime minister of the country for the period that it had no official government.

Following a continued lack of agreement over how to resolve the conflict over the electoral arrondissement of Brussels-Halle-Vilvoorde, the liberal Open VLD left the government on 22 April 2010, continuing the 2007–2011 Belgian political crisis. Prime Minister Yves Leterme (Christen-Democratisch en Vlaams, CD&V) immediately offered his resignation to King Albert II, who accepted it on 26 April 2010. Following the elections held on 13 June, there were fears that coalition-building may take so long that Belgium's presidency of the Council of the European Union, which starts on 1 July 2010, might have to start under a caretaker government.

According to a statement by the Flemish President of the Constitutional Court, Marc Bossuyt, the elections might be ruled unconstitutional unless the Brussels-Halle-Vilvoorde arrondissement is split up beforehand. On 4 May, all but one Flemish judge-president of the 13 Flemish Courts of First Instance wrote a collective letter, saying that the elections cannot be held with the current electoral districts and that a return to the previous electoral arrondissements is necessary. In contrast, Ghislain Londers, the president of the Court of Cassation declared that all judges are obliged to cooperate with the electoral process. Before the judges' letters, former president of the Belgian Chamber of Representatives Herman De Croo stated that no court could prevent the elections from taking place.

The international media saw the election as crucial to determine the future of the country, even though it was admitted that devolution would not happen immediately.

The parliament was dissolved by Declaration of Revision of the Constitution on 7 May 2010 and elections were called by royal order of the same day. The period with rules and limits on campaign spending (sperperiode), which normally runs three months prior to election day, started that day.

Voting occurred on Sunday 13 June 2010 between 08:00 and 13:00 in polling stations with paper ballots, and between 08:00 and 15:00 in those with electronic voting.

The newly elected parliament was to convene on 6 July 2010.