The Main Square Festival is an annual international music festival organized by Live Nation which takes place in the first week-end of July in Arras, France.

Created in 2004 by France Leduc Productions, the festival rose to one of the major music events of the country, attracting worldwide famous bands and stars like Coldplay, Depeche Mode, Placebo, Muse, Indochine, and Pearl Jam.

The first edition of the Main Square Festival took place on 3 July 2004 on the Grand-Place d'Arras. Gomm performed during the opening act and the headliner was Placebo. 15,000 spectators were present.

In 2005, Kyo & Sum 41 were the headliners on 3 July. This edition gathered 9,000 spectators.

The 2006 edition gathered around 45,000 people for a two-day festival on the Grand-Place d'Arras. Depeche Mode, Goldfrapp, Muse, The Kooks & Second Sex were present. During their live show, Muse broadcast live Thierry Henry's goal for France against Brazil in the 2006 World Cup quarter-finals.

The 2007 edition took place on 30 June and 1 July. The line-up was mainly composed of French artists, including headliners Indochine and Tryo, but also Ayọ, The Sunshiners, Air & Peter von Poehl.

The 2008 edition marked the beginning of the partnership with Live Nation and a three-day-format. The festival was organized from 4 to 6 July. The line-up was denser and more prestigious than the previous years. The 2008 edition gathered more than 60,000 people on the Grand-Place d'Arras. The Chemical Brothers, Underworld and Justice headlined the first day of the festival alongside Boys Noize and 2 Many DJ's. On the second day, Mika, The Kooks and BB Brunes were the headliners and The Hoosiers, Digitalism and Panic! at the Disco also performed. The final day was headlined by Radiohead while Sigur Rós, The Dø, Vampire Weekend, and The Wombats also performed.

On 7 July, a concert of Quebec star Celine Dion was organized on the Grand-Place d'Arras by Live Nation. Arras, Paris and Nice were the only three French cities on her "Taking Chances World Tour".