The Battle of Bornos on 5 November 1811 saw a Spanish force led by Francisco Ballesteros attack an Imperial French column under Jean-Baptiste Pierre de Semellé.

The French commander in Andalusia, Marshal Nicolas Soult was irritated by the continual raiding of his territory by Ballesteros and he determined to catch the clever Spanish general.

Ballesteros detected the converging French forces and raced south to Gibraltar where he found refuge.

On 5 November, Ballesteros marched to Bornos where he surprised Semellé, who commanded 1,500 men of the 16th Light Infantry and a French-allied Juramentados battalion.

[4] A second Battle of Bornos occurred on 31 May 1812 when Ballesteros surprised Nicolas François Conroux's troops in the town.