The second siege of Coria by the Emperor Alfonso VII of León was begun in early May 1142 and ended with the taking of the town in June.

Alfonso VII had vainly besieged it in July 1138, in which action his general Rodrigo Martínez was killed.

[3] The initial response to the arrival of Alfonso's army by the inhabitants of Coria, both the Almoravids (from northern Africa) and the local Muslims, was to fortify the gates against entry or exit with a "strong supporting wall".

The siege was still underway on 6 June, when, from his camp, Alfonso granted the village of Fradejas to the Diocese of Zamora.

[6] With deaths from starvation on the rise, the Almoravids offered Alfonso terms: if in a period of thirty days they could not gain external aid, they would surrender the city with all of their captives and riches.