Deir ez-Zor (Arabic: دَيْرُ ٱلزَّوْرِ / دَيْرُ ٱلزُّور, romanized: Dayru z-Zawr / Dayru z-Zūr; Syriac: ܕܝܪܐ ܙܥܘܪܬܐ, romanized: Dayrāʾ Zəʿōrtāʾ) is the largest city in eastern Syria and the seventh largest in the country. Located 450 km (280 mi) to the northeast of the capital Damascus on the banks of the Euphrates River, Deir ez-Zor is the capital of the Deir ez-Zor Governorate. In the 2018 census, it had a population of 271,800.
