Since the second half of the 11th century, the kings of Aragón and the counts of Barcelona and of Urgel tried with obstinacy to conquer the Muslim held towns and frontier fortresses of the Marca Superior. Specifically, they targeted the low lands around the Segre and Cinca Rivers all the way to the mouth of the Ebro, an active and prosperous region with direct access to the Mediterranean Sea. The most important towns in this region were Lleida, Mequinenza, Fraga, and Tortosa.

The Battle of Fraga was a battle of the Spanish Reconquista that took place on 17 July 1134 at Fraga, Aragon, Spain. The battle was fought between the forces of the Kingdom of Aragon, commanded by Alfonso the Battler and a variety of Almoravid forces that had come to the aid of the town of Fraga which was being besieged by King Alfonso I. The battle resulted in an Almoravid victory. The Aragonese monarch Alfonso I died shortly after the battle.