District B13 Ultimatum is the English language release title of the 2009 French action film, Banlieue 13 Ultimatum,  also known as District 14, District Thirteen 2, District 13: Ultimatum, and B13-u.

The film, directed by Patrick Alessandrin, is the sequel to the acclaimed 2004 French action film Banlieue 13 which enjoyed worldwide success and is now something of a cult classic. The original film was notable for its depiction of parkour in a number of stunt sequences that were completed without the use of wires or computer generated effects and because of this some critics drew comparisons to the popular Thai film Ong-Bak.

District 13 Ultimatum will have David Belle and Cyril Raffaelli reprising their original roles of Leito and Damien, respectively. Luc Besson, who co-produced and co-wrote District 13, is the screenwriter and producer