Martignas-sur-Jalle (; ) is a commune in the Gironde department, Nouvelle-Aquitaine, southwestern France. It is twinned with Aboyne, a village in Aberdeenshire, Scotland.
Historically, the town is known to have been the theater of the , where 500 to 600 longbowmen commanded by John Talbot were slaughtered by the French cavalry commanded by the Duke of Bourbon and the Count of Foix.