[6] In 2011, he starred in and directed Rebellion, a war film based on a true story of French commandos who clashed with tribes in New Caledonia, the Melanesian territory of France.

Kassovitz is also recognizable for playing a conflicted Belgian explosives expert in Steven Spielberg's 2005 film Munich, alongside Eric Bana, Daniel Craig, and Geoffrey Rush.

[citation needed] Since 2015, Kassovitz has been starring in the acclaimed espionage thriller series The Bureau, broadcast in France on Canal+ and made available around the world on Amazon Prime Video.

Kassovitz was married to French actress Julie Mauduech, whom he directed and acted alongside in his 1993 film Métisse (Café au lait, English title) and also made a brief appearance in La Haine (during the scene in the Parisian art gallery).

[citation needed] Kassovitz was an ardent critic of former president Nicolas Sarkozy, whom he described in his blog as having "ideas that not only reveal his inexperience of politics and human relations, but which also illuminate the purely demagogical and egocentric aspects of a puny, would-be Napoleon.

[13] On 3 September 2023, while engaged in a training course at the Autodrome de Linas-Montlhéry, Kassovitz was involved in a "serious" motorcycle accident that caused head trauma and a fractured pelvis.