Al-Omar field (Arabic: حقل العمر النفطي) is an oilfield in Deir ez-Zor Governorate, Syria. It is located 10 kilometres (6.2 mi) north of Mayadin, east of the Euphrates river.

Al-Omar oil field, discovered in 1987, was operated by Al-Furat Petroleum Company (AFPC), subsidiary of the Syrian Petroleum Company. It initially peaked at a production of around 80,000 barrels per day (b/d). However, due to a lack of pressure support and overproduction in the early 1990s, the field was damaged, leading to a sharp decline in output to 16,000 b/d by 1991. Water injection techniques were implemented from 1991 onwards, stabilizing production at a plateau of 60,000–70,000 b/d between 1994 and 1997. By 2008, however, production had declined again to around 20,000 b/d. In the meantime, the STOIIP was estimated at 760 million barrels.

During the Syrian civil war, the field changed hands multiple times. It fell under the control of the al-Nusra Front and other Islamist rebels in November 2013, then ISIS in July 2014 from Al-Shaitat clan, and ultimately the Syrian Democratic Forces (SDF) with support from the US-led Coalition in late October 2017 during the Eastern Syria campaign. Since then, the region has been targeted by pro-Iranian militias, opposing the U.S. presence in the area.