Anbar was an ancient and medieval town in central Iraq. It played a role in the Roman–Persian Wars of the 3rd–4th centuries, and briefly became the capital of the Abbasid Caliphate before the founding of Baghdad in 762. It remained a moderately prosperous town through the 10th century, but quickly declined thereafter. As a local administrative centre, it survived until the 14th century, but was later abandoned.

Fallujah is a city in Al Anbar Governorate, Iraq. Situated on the Euphrates River, it is located roughly 69 kilometres (43 mi) to the west of the capital city of Baghdad.