The first siege of Zaragoza was a bloody struggle in the Peninsular War (1807–1814). A French army under General Lefebvre-Desnouettes and subsequently commanded by General Jean-Antoine Verdier besieged, repeatedly stormed, and was repulsed from the Spanish city of Zaragoza in the summer of 1808.

The Peninsular War (1807–1814) was the military conflict fought in the Iberian Peninsula by Spain, Portugal, and the United Kingdom against the invading and occupying forces of the First French Empire during the Napoleonic Wars. In Spain, it is considered to overlap with the Spanish War of Independence.