The Battle of Bornos on 31 May 1812, saw a Spanish force led by Francisco Ballesteros attack an Imperial French division under Nicolas François Conroux.

Though the Spanish achieved surprise, the outnumbered French soldiers fought back and drove off their assailants.

Bornos is located on Route 342 about 40 miles (64 km) northeast of Jerez de la Frontera.

[4] This author named the battle "Cadiz" and gave a date of 1 June. David Gates wrote that the French lost about 500 casualties and agreed with Smith that Conroux's men inflicted total losses of about 1,500 on their enemies.

Three French columns were unsuccessful in an attempt to trap a Spanish force led by Ballesteros.