Ras Tanura is a city in the Eastern Province of Saudi Arabia located on a peninsula extending into the Persian Gulf. The name Ras Tanura applies both to a gated Saudi Aramco employee compound and to an industrial area further out on the peninsula that serves as a major oil port and oil operations center for Saudi Aramco, the largest oil company in the world. Today, the compound has about 3,200 residents, with a few Americans and British expats.

The Eastern Province, also known as the Eastern Region, is the easternmost of the 13 provinces of Saudi Arabia. It is the nation's largest province by area and the third most populous after the Riyadh and Mecca provinces. In 2017, the population was 4,900,325. Of these, 3,140,362 were Saudi citizens and 1,759,963 were foreign nationals The province accounts for 15.05% of the entire population of Saudi Arabia and is named for its geographical location relative to the rest of the kingdom.